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1

Zhao, Eric Jiahan, Cheng Liu, and Derek O. Northwood. "Accelerated Nano Super Bainite in Ductile Iron." MRS Advances 3, no. 45-46 (2018): 2789–94. http://dx.doi.org/10.1557/adv.2018.440.

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ABSTRACTA commercial unalloyed ductile iron has been developed to produce a multiphase matrix microstructure consisting of lenticular prior martensite, feathery upper bainite and a nano-scaled super bainite of lath bainitic ferrite and carbon-enriched film retained austenite. Multi-step heat treatment composed of austenizing, rapidly quenching and isothermally holding at low temperature have been developed. A tensile strength of more than 1.6 GPa, a hardness higher than HRC 54, and an elongation in excess of 5%, are achieved. This is attributed to a synergistic multi-phase strengthening effect
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2

Timokhina, Ilana B., Hossein Beladi, Xiang Yuan Xiong, Elena V. Pereloma, and Peter D. Hodgson. "Nano-Scale Analysis of Nano-Bainite Formed in Advanced High Strength Steels." Materials Science Forum 654-656 (June 2010): 102–5. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.102.

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The effect of composition and processing schedule on the microstructure of C-Mn-Si-Mo-(Al)-(Nb) steels containing nano-bainite was studied using transmission electron microscopy (TEM) and atom probe tomography (APT). The major phase formed in all steels was nano-bainite. However, the steels with lower carbon and alloying addition content subjected to TMP had better mechanical properties than high alloyed steel after isothermal treatment. The presence of ferrite in the microstructure can improve not only ductility but lead to the formation of retained austenite with optimum chemical stability.
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3

Sun, Wei Hua, and Zhi Chao Bi. "Grade E550 Heavy Steel Plate by TMCP for Offshore Energy Exploration." Advanced Materials Research 936 (June 2014): 1146–52. http://dx.doi.org/10.4028/www.scientific.net/amr.936.1146.

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This paper introduces the study and production on steel plate of Grade E550 in60mm thick by Thermo-mechanical processing (TMCP) and tempering for offshoreinfrastructure purpose. The steel plate obtained high strength and goodtoughness in both the base materials and the weld joints. Microstructure and precipitation characteristicswere examined in the plate is comprised of bainite with a small amount ofpre-eutectoid ferrite. Parallel arranged lath bainite characterizes thebainitic structure with high density of dislocations and precipitates. Carbides MxCy averaging 200nm indimension and MC type
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4

Pei, Wei, Wei Liu, Yue Zhang, Rongjian Qie, and Aimin Zhao. "Study on Kinetics of Transformation in Medium Carbon Steel Bainite at Different Isothermal Temperatures." Materials 14, no. 11 (2021): 2721. http://dx.doi.org/10.3390/ma14112721.

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Ultra-fine carbide-free bainitic (UCFB) steel, also known as nano-bainite (NB) steel, is composed of bainitic ferrite laths with nanoscale thickness and carbon-rich film-like retained austenite located between laths. The bainite transformation kinetic model can accurately describe the bainite transformation kinetics in conventional austempering (CA) processes based on the shear mechanism combined with the dilatometer test. UCFB steels with medium and high carbon composition are designed in this work to systematically study the transformation kinetics of bainite, and the evolution of its micros
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5

Mishra, Bidyapati, G. Sukumar, P. P. Senthil, et al. "Ballistic Efficacy of Carbide Free High Strength Nano Structured Bainitic Armour Steels." Defence Science Journal 73, No 2 (2023): 131–39. http://dx.doi.org/10.14429/dsj.73.18634.

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Carbide free nano-structured bainitic steels typically have strength more than 2.0 GPa and impact toughness of 7 J or less. Most of this class of steels have sluggish kinetics and takes 16-72 h for complete bainitic transformation. The present work discusses key perspectives in developing carbide free nano-structured bainitic steel having strength more than 2.0 GPa and toughness more than 15 J. Further, ballistic evaluation of newly developed carbide free nano-structured bainitic steels having strength more than 2.0 GPa and high toughness of 20 J was carried out to understand the adaptability
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6

YUAN Shao-qiang, 苑少强, 张晓娟 ZHANG Xiao-juan, 郝斌 HAO Bin, and 张济山 ZHANG Ji-shan. "Nano-size precipitation during relaxation and refinement of bainite." Optics and Precision Engineering 21, no. 8 (2013): 1995–99. http://dx.doi.org/10.3788/ope.20132108.1995.

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7

Wang, Jiamei, Xinjie Di, Chengning Li, and Dongpo Wang. "Characterization of nanoscale precipitates and enhanced mechanical properties of high strength weld metals containing Cu additions after PWHT." Metallurgical Research & Technology 119, no. 1 (2022): 119. http://dx.doi.org/10.1051/metal/2022007.

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In order to match rapidly development of high strength low alloy steels, the new metal cored wire contained copper was designed. The multi-pass weld metals were obtained by gas metal arc welding. Results show that microstructure of weld metals is bainite with M-A constituents, and there are nano-9RCu precipitates after PWHT. The weld metal as welded achieves 737 MPa of yield strength (YS) and 1097 MPa of ultimate tensile strength (UTS), with an elongation 8%. After PWHT, the YS and UTS are 725 MPa and 968 MPa, respectively, and elongation increases to 16%. The lower dislocations density and re
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8

Long, Xiaoyan, Zhao Dai, Wanshuai Wang, Zhinan Yang, Fucheng Zhang, and Yanguo Li. "Carbon Atom Distribution and Impact Toughness of High-Carbon Bainitic Steel." Coatings 14, no. 4 (2024): 457. http://dx.doi.org/10.3390/coatings14040457.

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High-carbon nano bainitic steel is currently a hot research topic. The effect of the matrix’s carbon content and carbon atom distribution on the toughness of high-silicon, high-carbon bainitic steel is studied. The microstructure under an incomplete austenitization process consists of undissolved carbides, bainitic ferrite, and retained austenite. Using this process, the carbon content in bainitic ferrite is relatively low. Under the complete austenitization process, the carbon content in the bainite ferrite in the sample is high, and there is more retained austenite in the blocky type. The sa
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9

Timokhina, I. B., K. D. Liss, D. Raabe, et al. "Growth of bainitic ferrite and carbon partitioning during the early stages of bainite transformation in a 2 mass% silicon steel studied by in situ neutron diffraction, TEM and APT." Journal of Applied Crystallography 49, no. 2 (2016): 399–414. http://dx.doi.org/10.1107/s1600576716000418.

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In situ neutron diffraction, transmission electron microscopy (TEM) and atom probe tomography (APT) have been used to study the early stages of bainite transformation in a 2 mass% Si nano-bainitic steel. It was observed that carbon redistribution between the bainitic ferrite and retained austenite at the early stages of the bainite transformation at low isothermal holding occurred in the following sequence: (i) formation of bainitic ferrite nuclei within carbon-depleted regions immediately after the beginning of isothermal treatment; (ii) carbon partitioning immediately after the formation of
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10

Kumar, Avanish, and Aparna Singh. "Toughness dependence of nano-bainite on phase fraction and morphology." Materials Science and Engineering: A 729 (June 2018): 439–43. http://dx.doi.org/10.1016/j.msea.2018.05.106.

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11

Rijkenberg, R. Arjan, Maxim P. Aarnts, Floor A. Twisk, Marga J. Zuijderwijk, M. Knieps, and H. Pfaff. "Linking Crystallographic, Chemical and Nano-Mechanical Properties of Phase Constituents in DP and TRIP Steels." Materials Science Forum 638-642 (January 2010): 3465–72. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.3465.

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This paper discusses practical EBSD strategies for identification and partitioning of phase constituents in DP and TRIP microstructures including martensite, retained-austenite, bainite, intercritical and epitaxial ferrite. EBSD data is complemented with nano-indentation analysis, providing evidence of indentation-induced phase transformation of retained-austenite in TRIP steel and micro-crack initiation at the interface between ferrite and mechanically transformed martensite.
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12

Hodgson, Peter D., Ilana Timokhina, Xiang Yuan Xiong, Yoshitaka Adachi, and Hossein Beladi. "Understanding of the Bainite Transformation in a Nano-Structured Bainitic Steel." Solid State Phenomena 172-174 (June 2011): 123–28. http://dx.doi.org/10.4028/www.scientific.net/ssp.172-174.123.

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A 0.79C-1.5Si-1.98Mn-0.98Cr-0.24Mo-1.06Al-1.58Co (wt%) steel was isothermally heat treated at 200°C for 10 days to form a nano-scale bainitic microstructure consisting of nanobainitic ferrite laths with high dislocation density and retained austenite films. The crystallographic analysis using TEM and EBSD revealed that the bainitic ferrite laths are close to the Nishiyama-Wassermann orientation relationship with the parent austenite. There was only one type of packet identified in a given transformed austenite grain. Each packet consisted of two different blocks having variants with the same h
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13

Xing, X. L., Y. F. Zhou, S. Y. Gao, J. B. Wang, Y. L. Yang, and Q. X. Yang. "Nano-twin in surface modified bainite induced by laser surface modification." Materials Letters 165 (February 2016): 79–82. http://dx.doi.org/10.1016/j.matlet.2015.11.084.

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14

Zhang, Xin, Zixuan Shao, Muqun Sun, Tianyu Cui, Qingsuo Liu, and Jian Han. "Reverse Hall–Petch Effect of Nano-Bainite in a High-Carbon Silicon-Containing Steel." Metals 14, no. 11 (2024): 1225. http://dx.doi.org/10.3390/met14111225.

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High-strength steels are widely used in various mechanical production and construction industries for their low cost, high strength and high toughness. Among these, bainitic steels have better comprehensive performance relative to martensite and ferrite. In this paper, from the point of view of its microscopic fine structure and mechanical properties, the high-carbon silicon-containing steel Fe-0.99C-1.37Si-0.44Mn-1.04Cr-0.03Ni was austenitized at high temperature after a brief isothermal treatment at 280 °C and is briefly reviewed. We have used EBSD, TEM and 3D-APT to observe a unique transfo
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15

Das, Sourav, Saurabh Kundu, and Arunansu Haldar. "Development of Continuously Cooled High Strength Bainitic Steel through Microstructural Engineering at Tata Steel." Materials Science Forum 702-703 (December 2011): 939–42. http://dx.doi.org/10.4028/www.scientific.net/msf.702-703.939.

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Bainitic steels, which are transformed at very low temperatures, offer an excellent combination of strength and ductility where the strength comes from the nano-structured bainitic plates and thin-film of austenite sandwiched between two bainite sheaves offers the ductility. The main drawback of this structure is the long transformation time which is not ideal for industrial application. Through the microstructural engineering, the extent and kinetics of transformation can be manipulated by judicious selection of alloy composition and process variables. The main challenge is to delay the trans
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16

Avishan, Behzad, Sahand Golchin, and Sasan Yazdani. "Elongation improvement in nano bainite steel obtained from plastically deformed primary austenite." Philosophical Magazine 100, no. 17 (2020): 2244–61. http://dx.doi.org/10.1080/14786435.2020.1764654.

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17

Kumar, Avanish, and Aparna Singh. "Microstructural effects on the sub-critical fatigue crack growth in nano-bainite." Materials Science and Engineering: A 743 (January 2019): 464–71. http://dx.doi.org/10.1016/j.msea.2018.11.114.

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18

Yang, Zhinan, Chunhe Chu, Feng Jiang, et al. "Accelerating nano-bainite transformation based on a new constructed microstructural predicting model." Materials Science and Engineering: A 748 (March 2019): 16–20. http://dx.doi.org/10.1016/j.msea.2019.01.061.

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19

Timokhina, Ilana, Hossein Beladi, Xiang Yuan Xiong, Yoshitaka Adachi, and Peter D. Hodgson. "Application of Advanced Experimental Techniques for the Microstructural Characterization of Nanobainitic Steels." Solid State Phenomena 172-174 (June 2011): 1249–54. http://dx.doi.org/10.4028/www.scientific.net/ssp.172-174.1249.

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A 0.79C-1.5Si-1.98Mn-0.98Cr-0.24Mo-1.06Al-1.58Co (wt%) steel was isothermally heat treated at 350°C bainitic transformation temperature for 1 day to form fully bainitic structure with nano-layers of bainitic ferrite and retained austenite, while a 0.26C-1.96Si-2Mn-0.31Mo (wt%) steel was subjected to a successive isothermal heat treatment at 700°C for 300 min followed by 350°C for 120 min to form a hybrid microstructure consisting of ductile ferrite and fine scale bainite. The dislocation density and morphology of bainitic ferrite, and retained austenite characteristics such as size, and volume
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20

Luo, Quanshun, Haijuan Mei, Matthew Kitchen, Yubi Gao, and Leon Bowen. "Effect of Short-Term Low-Temperature Austempering on the Microstructure and Abrasive Wear of Medium-Carbon Low-Alloy Steel." Metals and Materials International 27, no. 9 (2021): 3115–31. http://dx.doi.org/10.1007/s12540-020-00957-6.

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Abstract Nano-bainitic steels have attracted great attention for good wear resistance. In this research, a medium-carbon low-alloyed steel was austempered at a low temperature close to its martensite-start temperature for various times to obtain mixed microstructure of nano-bainite, martensite and retained austenite. The austempered samples were characterised comprehensively by field-emission SEM and quantitative XRD. Its two-body abrasive wear property was evaluated by sliding on a SiC abrasive disc. The results revealed the formation of initial nano-width carbide-free bainitic ferrite (BF) a
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21

Fu, Lihua, Meng Zhou, Yanlin Wang, et al. "The Microstructure Transformations and Wear Properties of Nanostructured Bainite Steel with Different Si Content." Materials 15, no. 18 (2022): 6252. http://dx.doi.org/10.3390/ma15186252.

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Nanostructured bainite (NB) bearing steel has excellent strength and ductility combinations, which can improve the fatigue life and wear resistance of bearing steel in harsh conditions. However, the phase transformations and the correlation between the microstructure and wear properties of NB bearing steel are still unclear. In this study, bearing steels with different Si contents (GCr15SiMo and GCr15Si1Mo) were prepared to have nano-bainitic structures, and their microstructure transformations and wear mechanisms were investigated. The results show that the Si element can inhibit the precipit
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22

Grover, Kavi. "Microstructural Evolution and Phase Transformations in Plain Carbon Steel under Cyclic Heat Treatment." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 06 (2025): 1–9. https://doi.org/10.55041/ijsrem50139.

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Abstract Cyclic heat treatment (CHT), involving repeated austenitization and rapid cooling cycles, substantially alters the microstructure of plain carbon steels. In this study, a low-carbon steel was subjected to multiple short-duration thermal cycles above the austenitizing temperature. Initial ferrite–pearlite microstructures gradually transformed into a fine-grained martensitic–bainitic matrix with nano-scale cementite particles as cycle count increased. Each cycle imparted defects and stored energy that drive recrystallization and grain refinement, shrinking average grain size from tens o
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23

Golchin, Sahand, Behzad Avishan, and Sasan Yazdani. "Effect of 10% ausforming on impact toughness of nano bainite austempered at 300 °C." Materials Science and Engineering: A 656 (February 2016): 94–101. http://dx.doi.org/10.1016/j.msea.2016.01.025.

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24

Zakerinia, Hossein, Ahmad Kermanpur, and Abbas Najafizadeh. "The effect of bainite in producing nano/ultrafine grained steel by the martensite treatment." Materials Science and Engineering: A 528, no. 10-11 (2011): 3562–67. http://dx.doi.org/10.1016/j.msea.2011.01.067.

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25

Yang, Z. N., L. Q. Dai, C. H. Chu, F. C. Zhang, L. W. Wang, and A. P. Xiao. "Effect of Aluminum Alloying on the Hot Deformation Behavior of Nano-bainite Bearing Steel." Journal of Materials Engineering and Performance 26, no. 12 (2017): 5954–62. http://dx.doi.org/10.1007/s11665-017-3018-7.

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26

Kamikawa, Naoya, Kensuke Sato, Goro Miyamoto, et al. "Stress–strain behavior of ferrite and bainite with nano-precipitation in low carbon steels." Acta Materialia 83 (January 2015): 383–96. http://dx.doi.org/10.1016/j.actamat.2014.10.010.

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27

Yu, X. F., Y. H. Wei, D. Y. Zheng, et al. "Effect of nano-bainite microstructure and residual stress on friction properties of M50 bearing steel." Tribology International 165 (January 2022): 107285. http://dx.doi.org/10.1016/j.triboint.2021.107285.

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28

Xing, X. L., Y. F. Zhou, Y. L. Yang, S. Y. Gao, X. J. Ren, and Q. X. Yang. "Surface modification of low-carbon nano-crystallite bainite via laser remelting and following isothermal transformation." Applied Surface Science 353 (October 2015): 184–88. http://dx.doi.org/10.1016/j.apsusc.2015.06.109.

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29

Aksenova, K. V., E. N. Nikitina, Yu F. Ivanov, and D. A. Kosinov. "Hardening mechanisms of steels with bainite and martensite structures." Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 61, no. 10 (2018): 787–93. http://dx.doi.org/10.17073/0368-0797-2018-10-787-793.

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Martensite and bainite are the most complex structures being formed in steel in heat treatment including the quantitative interpretation. On frequent occasions, the application field of these steels includes the operation at high static and dynamic compression stresses. The thorough and comprehensive analysis of the materials’ structure after different types of treatment enables to use them competently for the manufacturing of the parts and structures providing them with the necessary complex of physical and mechanical properties. The factor determining the mechanical properties of the materia
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30

Guo, Yanbing, Zhuguo Li, Liqun Li, and Kai Feng. "The Effects of Micro-Segregation on Isothermal Transformed Nano Bainitic Microstructure and Mechanical Properties in Laser Cladded Coatings." Materials 13, no. 13 (2020): 3017. http://dx.doi.org/10.3390/ma13133017.

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The design of metastable retained austenite is the key issue to obtain nano bainitic steel with high strength and toughness. In this study, nanostructured Fe-based bainitic coatings were fabricated using laser cladding and following isothermal heat treatment. The microstructures and mechanical properties of the laser cladded coating were investigated. The results show that the Mn, Cr, Co, and Al segregated at the solidified prior grain boundaries. The micro-segregation of the solutes strongly influenced the stability of the austenite. As the isothermal temperature decreases, the interface of t
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31

Zhao, J., T. S. Wang, B. Lv, and F. C. Zhang. "Microstructures and mechanical properties of a modified high-C–Cr bearing steel with nano-scaled bainite." Materials Science and Engineering: A 628 (March 2015): 327–31. http://dx.doi.org/10.1016/j.msea.2014.12.121.

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32

Chhajed, Bhawesh, Sudharm Rathore, Avanish Kumar, and Aparna Singh. "Investigation of microstructural evolution in nano-structured bainite during Paris law regime of fatigue crack growth." Procedia Structural Integrity 68 (2025): 708–14. https://doi.org/10.1016/j.prostr.2025.06.119.

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33

Li, Zhengrong, Zhenhu Lv, Chuangwei Wang, Lei Liu, Kaiyu Cui, and Zhengzhi Zhao. "Effect of Coiling Temperature on Microstructure and Properties of Titanium Strengthened Weathering Building Steel." Metals 13, no. 4 (2023): 804. http://dx.doi.org/10.3390/met13040804.

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For weathering steel used in building, it is necessary not only to ensure weather resistance, but also to improve the strength and yield ratio. This study investigates the strengthening effect of Ti microalloying on the tested steel by conducting continuous cooling transformation tests of undercooled austenite and comparative tests of microstructure and performance at different coiling temperatures, with 0.07 wt.% Ti added to the weathering building test steel. The results show that, with an increase in cooling rate (0.1~50 °C/s), the room temperature microstructure of different cooling rates
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34

Kim, Jinhyuk, Gyeongsik Yu, Sangeun Kim, et al. "Microstructural and Mechanical Characterization of Low-Alloy Fire- and Seismic-Resistant H-Section Steel." Metals 14, no. 4 (2024): 374. http://dx.doi.org/10.3390/met14040374.

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This study investigates the microstructure and nano-hardness distribution across the thickness of an H-section steel beam, specifically designed for seismic and fire resistance and fabricated using a quenching and self-tempering process. The beam dimensions include a 24 mm thick flange, with flange and web lengths of 300 mm and 700 mm, respectively. Our findings indicate that the mechanical properties across the flange thickness meet the designed criteria, with yield strengths exceeding 420 MPa, tensile strengths of over 520 MPa, and a yield-to-tensile strength ratio below 0.75. Microstructura
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35

Bi, Hong Xia, Ming Hua Tang, Zhi Lan Ren, and Yong Zhou. "Effects of Tempering Temperature on the Microstructure and Mechanical Properties of Low Alloy Ultra-High Strength 45CrNiSiMnMoVA Steel." Materials Science Forum 1036 (June 29, 2021): 11–19. http://dx.doi.org/10.4028/www.scientific.net/msf.1036.11.

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The effects of different tempering temperatures on the microstructure evolution and mechanical properties of the new low-alloy ultra-high-strength 45CrNiSiMnMoVA steel after quenching were investigated by mechanical property tests, SEM and TEM. The results show that a complex phase organization consisting of martensite/ lower bainite of the tested steel after treated at 920°C×1h+(320~380)°C×4h was obtained, and the partition interface of the lath martensite bundle became blurred from clear with the increase of tempering temperature; In the proposed tempering temperature range, the toughness of
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36

Królicka, Aleksandra, Francisca Garcia Caballero, Władysław Zalecki, Roman Kuziak, and Radosław Rozmus. "Controlling the Thermal Stability of a Bainitic Structure by Alloy Design and Isothermal Heat Treatment." Materials 16, no. 8 (2023): 2963. http://dx.doi.org/10.3390/ma16082963.

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The aim of this work was to develop a novel bainitic steel that will be specifically dedicated to achieving a high degree of refinement (nano- or submicron scale) along with increased thermal stability of the structure at elevated temperatures. The material was characterized by improved in-use properties, expressed as the thermal stability of the structure, compared to nanocrystalline bainitic steels with a limited fraction of carbide precipitations. Assumed criteria for the expected low martensite start temperature, bainitic hardenability level, and thermal stability are specified. The steel
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37

Abimbola Samson IDOWU, Benjamin O. ADEWUYI, Davies Oladayo. FOLORUNSO, Akeem Damilola AKINWEKOMI, and Bayode Benson ADEYANJU. "Influence of thermal treatment on the wear resistance of autempered ductile iron – a review." Engineering Science & Technology Journal 5, no. 12 (2024): 3278–96. https://doi.org/10.51594/estj.v5i12.1781.

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The wear resistance of ductile iron can be significantly influenced by thermal treatment methods, which alter its microstructure and mechanical properties. This paper review investigates the effects of three distinct thermal treatments—Austenitizing, Austempering, and Cryogenic treatment—on the wear resistance of ductile iron. Austenitizing involves heating the material to 900°C in a salt bath, facilitating the formation of austenite, which provides a uniform matrix for subsequent treatments. Austempering, achieved through rapid isothermal quenching in a salt mixture of potassium nitrate (KNO?
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38

Krupp, Ulrich, Mikhail Solovev, Felix Honecker, Bernhard Adams, and Jan-Christoph Florian. "The Potential of Self-Tempered Martensite and Bainite in Improving the Fatigue Strength of Thermomechanically Processed Steels." MATEC Web of Conferences 165 (2018): 20006. http://dx.doi.org/10.1051/matecconf/2018165020006.

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In contrast to a two-stage hardening and tempering process, the definition of optimized cooling routes after hot working of low-alloy Cr steel allows the adjustments of high-strength microstructures with a sufficient degree of ductility at the same time without any additional heat-treatment. While compressed air cooling after hot forging of micro-alloyed steel grades leads to the formation of lower bainite with finedispersed cementite platelets, quenching by water spray down to the martensite start temperature results in the formation of martensite, that is self-tempered during the subsequent
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39

Krupp, Ulrich, Mikhail Solovev, Felix Honecker, Bernhard Adams, and Jan-Christoph Florian. "The Potential of Self-Tempered Martensite and Bainite in Improving the Fatigue Strength of Thermomechanically Processed Steels." MATEC Web of Conferences 165 (2018): 20006. http://dx.doi.org/10.1051/matecconf/201816520006.

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In contrast to a two-stage hardening and tempering process, the definition of optimized cooling routes after hot working of low-alloy Cr steel allows the adjustments of high-strength microstructures with a sufficient degree of ductility at the same time without any additional heat-treatment. While compressed air cooling after hot forging of micro-alloyed steel grades leads to the formation of lower bainite with finedispersed cementite platelets, quenching by water spray down to the martensite start temperature results in the formation of martensite, that is self-tempered during the subsequent
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40

López Perrusquia, N., J. A. Ortega Herrera, M. A. Doñu Ruiz, V. J. Cortes Suarez, and L. D. Cruz Rosado. "Characterization Microstructural and Mechanical of X-60 Steel Heat-Treated." MRS Proceedings 1481 (2012): 63–69. http://dx.doi.org/10.1557/opl.2012.1633.

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ABSTRACTIn this paper was study the effect of heat treatment on mechanical properties of an API X-60 steel used for storage and transportation of hydrocarbons.In the first stage evaluation are mechanical properties of steel heat treated by the technique of the three-point test according to ASTM 399-90 was carried out. In the second stage, characterization of the type of failure and microstructure through optical microscopy (OM) was determined; also heat treated samples were then mechanically tested for hardness (HRC) and nano-indentation. The presence of alloying elements by scanning electron
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Kwon, Ohjoon, Kyoo Young Lee, Gyo Sung Kim, and Kwang Geun Chin. "New Trends in Advanced High Strength Steel Developments for Automotive Application." Materials Science Forum 638-642 (January 2010): 136–41. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.136.

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The body design with light weight and enhanced safety is a key issue in the car industry. Corresponding to this trend, POSCO is developing various automotive steel products with advanced performance. Conventional advanced high strength steels such as DP and TRIP steels are now expanding their application since the steels exhibit higher strength and ductility than those of conventional solution and precipitation strengthened high strength steels. Efforts have been made to enhance the mechanical performance of these steels such as ductility, hole expansion ratio, deep drawability, etc. Current r
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Papaefthymiou, Spyros, Marianthi Bouzouni, and Roumen H. Petrov. "Study of Carbide Dissolution and Austenite Formation during Ultra–Fast Heating in Medium Carbon Chromium Molybdenum Steel." Metals 8, no. 8 (2018): 646. http://dx.doi.org/10.3390/met8080646.

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In this study, UltraFast Heat Treatment (UFHT) was applied to a soft annealed medium carbon chromium molybdenum steel. The specimens were rapidly heated and subsequently quenched in a dilatometer. The resulting microstructure consists of chromium-enriched cementite and chromium carbides (in sizes between 5–500 nm) within fine (nano-sized) martensitic and bainitic laths. The dissolution of carbides in austenite (γ) during ferrite to austenite phase transformation in conditions of rapid heating were simulated with DICTRA. The results indicate that fine (5 nm) and coarse (200 nm) carbides dissolv
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Wang, Xiaonan, Yanfeng Zhao, Bingjie Liang, Linxiu Du, and Hongshuang Di. "Study on Isothermal Precipitation Behavior of Nano-Scale (Nb,Ti)C in Ferrite/Bainite in 780 MPa Grade Ultra-High Strength Steel." steel research international 84, no. 4 (2012): 402–9. http://dx.doi.org/10.1002/srin.201200195.

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Jia, Decheng, Chunsheng Zhang, Qingchao Wang, Helin Wang, Zhinan Yang, and Fucheng Zhang. "Unleashing the potential of nano-bainite bearing steels: Controllable selection of microstructure evolution enables concurrent improvement of toughness and hardness by pre-cold deformation." Materials Science and Engineering: A 906 (July 2024): 146715. http://dx.doi.org/10.1016/j.msea.2024.146715.

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Hong, Seokmin, Cho-Long Lee, Bong-Sang Lee, Hong-Deok Kim, and Min-Chul Kim. "Effects of Intercritical Heat Treatment on the Temper Embrittlement of SA508 Gr.4N Ni-Cr-Mo High Strength Low Alloy Steels for Reactor Pressure Vessels." Korean Journal of Metals and Materials 61, no. 10 (2023): 729–40. http://dx.doi.org/10.3365/kjmm.2023.61.10.729.

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To analyze the effects of intercritical heat treatment on the temper embrittlement of SA508 Gr.4N steels, two model alloys with different phosphorus (P) contents were fabricated. Each sample was heat treated by applying a conventional heat treatment process (quenching-tempering) with/without an intercritical heat treatment process (IHT) and a step-cooling heat treatment for temper embrittlement. Then their microstructure and mechanical properties were evaluated. The microstructure of the SA508 Gr.4N model alloy was composed of tempered lower bainite and martensite, and nano-sized precipitates
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Chhajed, Bhawesh, Kushal Mishra, Kritika Singh, and Aparna Singh. "Corrigendum to “Effect of prior austenite grain size on the tensile properties and fracture toughness of nano-structured bainite” [Materials Characterization, Volume 192, October 2022, 112214]." Materials Characterization 199 (May 2023): 112807. http://dx.doi.org/10.1016/j.matchar.2023.112807.

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Chen, Chih Yuan, Shih Fan Chen, Jer Ren Yang, and Chien Chon Chen. "Precipitation of Nano-Sized Carbides in a Ti-Mo Bearing Steel at a Low Transformation Temperature." Atlas Journal of Materials Science 2, no. 1 (2017): 48–53. http://dx.doi.org/10.5147/ajms.v2i1.125.

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While the role of Ti and Mo elements on precipitation strengthening in ferrite grains formed during austenite/ferrite transformation is very clear, some uncertainty still presents concerning influence of microalloying elements on bainite transformation. Therefore, the present study focuses on the precipitation behavior occurred in a Ti-Mo bearing steel during bainitic phase transformation under different heat treatment conditions, and the correlation of the precipitation behavior with hardness distribution. Through the present work, it is expected to achieve a better understanding of low-tempe
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Marcisz, Jarosław, Bogdan Garbarz, Władysław Zalecki, Zofia Kania-Pifczyk, Lech Starczewski, and Marcin Gołuński. "OPTIMISATION OF BALLISTIC PROPERTIES OF NANOSTRUCTURED BAINITIC STEEL PLATES FOR CONTAINER ARMOUR SYSTEM." PROBLEMY TECHNIKI UZBROJENIA 151, no. 3 (2020): 97–119. http://dx.doi.org/10.5604/01.3001.0013.7325.

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Abstract: An innovative armour system containing plates made of nanostructured bainite steel is under development to improve operating properties of a light armoured observation-protective container (LAOC) providing the 2nd protection level according to STANAG 4569. Armour system solution of the container has been modified because the new plates have different mechanical and technological properties than currently used armour plates. The paper presents results of investigation of material characteristics and firing tests of plates made of nanostructured steel in the semi-industrial scale. To o
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Rementeria, Rosalia, Francisca G. Caballero, Lucia Morales-Rivas, and Carlos Garcia-Mateo. "Developing Nanostructured Metal at the Atomic and Nano Scales." AM&P Technical Articles 175, no. 1 (2017): 21–24. http://dx.doi.org/10.31399/asm.amp.2017-01.p021.

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Abstract Affordable bulk production of a newly developed nanostructured bainitic steel is possible without using severe deformation or complex heat treatments. This article discusses the characteristics and significance of nanostructured bainite in terms of the transformation mechanism.
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Wang, Jiamei, Chengning Li, Xinjie Di, and Dongpo Wang. "Effect of Cu Content on Microstructure and Mechanical Properties for High-Strength Deposited Metals Strengthened by Nano-Precipitation." Metals 12, no. 8 (2022): 1360. http://dx.doi.org/10.3390/met12081360.

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With the rapid development of low-carbon high strength steel, higher requirements are put forward for the matching welding consumables. The deposited metals with 0.62–2.32% Cu addition was prepared by tungsten inert gas welding via metal cored wire. The effect of Cu element on microstructure and mechanical properties of deposited metals were investigated. The multiphase microstructure of deposited metals consists of bainite, martensite, residual austenite, and martensite-austenite constituents. It is found that Cu decreases the start temperature of martensite (Ms) and enlarges the temperature
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