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Academic literature on the topic '9Ni0'

Author: Grafiati

Published: 24 April 2022

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Journal articles on the topic "9Ni0"

1

Qu, Zhao Xia, Li Qian Xia, and Xiao Jie Wang. "The Study on Welding Technology of 9Ni Steel." Materials Science Forum 941 (December 2018): 516–23. http://dx.doi.org/10.4028/www.scientific.net/msf.941.516.

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9Ni steel is a low temperature serving ferrite steel, providing high strength and excellent low temperature toughness, which could serve well at-196°C. Therefore 9Ni steel is widely used in storage tanks and transport ships for liquefied natural gas (LNG). Nevertheless there are some challenges in the industrial application, such as hot cracking, cold cracking, magnetic arc blow, etc.. In this paper, the study on the welding technology of 9Ni steel developed by Baosteel is carried out. Firstly the weldability is analyzed through welding thermal simulation using Gleeble 3500 system, Y-groove cracking test, maximum hardness in weld heat-affected zone test. The results prove that 9Ni steel could be welded without preheating. The welding consumables have also significant influence on the performance of the welded joints. In this paper the characteristics of different types of welding consumables, including ferrite base type, austenitic stainless steel type, Ni-base alloy type and Fe-Ni base alloy type are analyzed, then the selecting principle for welding consumables is proposed. Furthermore welding process experiments are undertaken using various welding procedures such as SMAW, GTAW, FCAW and SAW. The results indicate that heat input and interpass temperature should be controlled to ensure a sound weld joint. Finally fracture toughness at-196°C of 9Ni steel and its joint is studied using CTOD test. In conclusion, 9Ni steel developed by Baosteel has good weldability and can meet the requirements of industrial application.

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2

Hany, Sara, Benoit Duponchel, Antoine Aboukaïs, Eugene Bychkov, and Edmond Abi Aad. "X-Ray and Neutron Scattering Studies of the 9Ni Cryogenic Steel and its Weld Joint." Materials Science Forum 879 (November 2016): 697–702. http://dx.doi.org/10.4028/www.scientific.net/msf.879.697.

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To guarantee the reliability and safe operation of large-scale metallic structures exposed to cryogenic temperatures for extended periods, it is important to evaluate structural properties of the base metal as well as the welded zone in order to prevent damages that could occur. Spatially-resolved high-energy synchrotron diffraction, pulsed neutron diffraction and small-angle neutron scattering have been used to study short, intermediate and mesoscopic range order in cryogenic 9Ni steel as well as the structural changes induced by the welding. Pristine 9Ni steel appears to be a metastable Fe-Ni alloy with main bcc martensitic phase and a minority fcc austenitic phase. Welding of 9Ni steel using SMAW technique has revealed a fast intergranular nickel diffusion at high temperatures during welding originated from high nickel content in the SMAW welding alloy.

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3

Shin, Jae Kyoung, Soo Woo Nam, and Soo Chan Lee. "A Study of Nitrogen Effect on the Characteristics of Creep-Rupture in 18Cr-9Ni Austenitic Steels." Key Engineering Materials 297-300 (November 2005): 409–14. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.409.

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To understand the effects of nitrogen on high temperature, creep-rupture tests have been conducted at 973 and 1073K for 18Cr-9Ni austenitic stainless steels with 0.14 and 0.08wt% nitrogen contents. It is observed that creep-rupture life of 18Cr-9Ni-0.14N steel is longer than that of 18Cr-9Ni-0.08N steel. To verify the difference in creep-rupture life between two alloys, scanning electron microscope and transmission electron microscopy are used to observe the microstructure. From the observations, it is known that the Cr-rich carbides are precipitated mainly at the grain boundary. Comparing the ratio of the linear density of the precipitate particles, the higher nitrogen content is, the less carbide is precipitated. Nitrogen might retard the formation of carbides at the grain boundary and reduce the density of cavity sites which are one of the main grain boundary damages.

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4

Cao, Guang-Ming, Zhi-Wei Gao, and Xin-Yu Gao. "Predicting flow stress of Ni steel based on machine learning algorithm." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 236, no. 8 (December 30, 2021): 4253–66. http://dx.doi.org/10.1177/09544062211048175.

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This article builds a stress–strain prediction model based on production data from the steel industry by using machine learning algorithms. Based on the stress–strain data of 9Ni steel hot deformation behavior, the prediction model of flow stress constitutive equation of 9Ni steel is established. Four models, including Arrhenius-type model considering strain compensation, Arrhenius-type model of Stochastic Configuration Networks (SCNs) neural network, Arrhenius-type model of Multi-objective Particle Swarm Optimization (AMPSO) and Support Vector Machine (SVM) model, are adopted in this research. The results show that the Arrhenius-type model considering strain compensation can predict the stress trend under different deformation conditions, but its prediction accuracy has some deviation. The prediction model based on SVM algorithm has the best prediction accuracy. The square of Correlation Coefficient (R2), the Average Absolute Relative Error (AARE), and Mean Square Error (MSE) are 0.99996, 0.002455, and 0.1998, respectively. Based on the data of 9Ni steel hot deformation behavior, the prediction models of machine learning algorithm have good application prospects in steel industry.

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5

Su, Hang, Xi Qing Zhao, Tao Pan, Xiao Rong Lei, and Qing Feng Wang. "Microstructure and Mechanical Properties in QT-Treated 9Ni Steel." Advanced Materials Research 562-564 (August 2012): 39–42. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.39.

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Microstructure and mechanical properties in QT-Treated 9Ni steel were investigated. The detail microstructures were observed by optical microscope (OM) and transmission electron microscope (TEM). The volume fraction of austenite was estimated by XRD. Tensile test at room temperature and Charpy-V-Notch (CVN) impact test at -196°C were carried out. The results showed that the microstructure of QT-treated 9%Ni steel was composed of tempered martensite and reversed austenite. The brittle cementite was absorbed gradually by the increasing reversed austenite as the tempering temperature increased. The optimum tempering temperature range was 560°C~580°C. The reversed austenite could improve the cryogenic toughness of 9Ni steel through the combination of the scavenging effect and the TRIP effect.

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6

Mohd Rabani, Nur Amira, and Zakiah Kamdi. "Two-Body Dry Abrasive Wear Performance of High Velocity Oxygen Fuel Spray Process and Electrodeposited Cermet Coatings." Materials Science Forum 888 (March 2017): 131–35. http://dx.doi.org/10.4028/www.scientific.net/msf.888.131.

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In order to protect parts against wear, the carbon steel used are commonly coated by cermet coatings to increase the wear resistance. In this paper, the coatings consist of tungsten carbide 17wt% cobalt (WC-17Co), tungsten carbide 9wt% nickel (WC-9Ni), electrodeposited nickel (electro Ni) and electrodeposited nickel-silicon carbide (electro Ni-SiC) coatings. All coatings are deposited onto AISI 1018 carbon steel by using two different methods which are high velocity oxygen fuel (HVOF) and co-electrodeposition method. Abrasive wear test were observed under two‑body dry abrasion conditions with pin-on-disc test arrangement. Based on the volume loss after the wear test, the wear rates were calculated by using Archard’s law. The wear tracks of the coatings were investigated by using scanning electron microscope (SEM) and atomic force microscopy (AFM). The hardness of each coating was measured by using Vickers microhardness. The results showed that HVOF coatings have lower wear rate compared to the electrodeposited coatings. WC-9Ni has the lowest wear rate which is 4.06×10-3 mm3/Nm much lower compared to electro Ni-SiC of 16.36×10-3 mm3/Nm. This result was expected as the hardness of WC-9Ni is 1625.37 HV higher than electrodeposited coatings which approximately 380.51 HV. In conclusion, the methods of coating deposited affect the wear resistance as well as the hardness of the coatings.

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Wu, Hui Bin, Lei Li, Kun Zhang, and Di Tang. "Stability of Reversed Austenite in 9Ni Steel." Advanced Materials Research 535-537 (June 2012): 580–85. http://dx.doi.org/10.4028/www.scientific.net/amr.535-537.580.

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The samples of 9Ni steel were treated by Quenching + Tempering (QT) and Quenching + larmellarizing + Tempering (QLT). The morphology, thermal stability and mechanical stability of the reversed austenite in 9Ni steel were studied by TEM, XRD, EBSD, subzero treatment, three-point bending, uniaxial tension and uniaxial compression. It turns out that blocky reversed austenite occurs in QT-treated steel, while blocky and filmy reversed austenite occurs in QLT-treated steel, additionally, the filmy reversed austenite distributes in the lath boundaries. Subzero treatment shows that certain amount of reversed austenite in QLT-treated samples transforms after dipping into liquefied nitrogen, but it retains a higher level of more stable austenite in QLT-treated sample than that in QT-treated sample. Both tension and compression facilitate the transformation of reversed austenite into martensite, and the retained austenite mainly locates within grains.

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8

Wang, Duan Jun, Li Gang Liu, Yu Hui Wang, Xi Qing Zhao, Wen Jun Liu, and Qing Feng Wang. "Effect of Energy Input of Welding Thermal Cycles on the Cryogenic Toughness of the CGHAZ in Steel 9Ni." Advanced Materials Research 476-478 (February 2012): 2449–54. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.2449.

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The effect of energy input of welding thermal cycles with different t_(8/5) on the cryogenic toughness of the coarse-grained heat-affected zones(CGHAZs) in steel 9Ni was invested. The CGHAZ specimens for different energy input welding thermal cycles were prepared by GLEEBLE3500 thermal simulative experimental machine. The fracture morphology of welding thermal cycle specimens with different t_(8/5) was observed by using SEM. The microstructure, prior austenite grain and the appearance of packet in HAZ were observed by using OM. The block width was measured by using EBSD. The cryogenic toughness of the welding thermal cycle specimens becomes better with increasing t_(8/5). With increasing t_(8/5)，the appearance of granular bainite makes the space of martensite diminish, which refines the packet and block sizes. The refinement of martensite packet is the reason of the improvement of cryogenic toughness in steel 9Ni.

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9

Liu, Yi-zhi, Cai-fu Yang, Feng Chai, Tao Pan, and Hang Su. "High Temperature Oxidation Resistance of 9Ni Steel." Journal of Iron and Steel Research International 21, no. 10 (October 2014): 956–63. http://dx.doi.org/10.1016/s1006-706x(14)60168-0.

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10

Stiller, K., M. Hättestrand, and F. Danoix. "Precipitation in 9Ni–12Cr–2Cu maraging steels." Acta Materialia 46, no. 17 (November 1998): 6063–73. http://dx.doi.org/10.1016/s1359-6454(98)00267-5.

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Books on the topic "9Ni0"

1

Torres, Pablo D. Stress corrosion evaluation of HP 9Ni-4Co-0.20C steel. [Washington, DC]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1993.

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Torres, Pablo D. Stress corrosion evaluation of HP 9Ni-4Co-0.20C steel. [Washington, DC]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1993.

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Torres, Pablo D. Stress corrosion evaluation of HP 9Ni-4Co-0.30C steel. [Washington, DC]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1993.

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United States. National Aeronautics and Space Administration. Scientific and Technical Information Program., ed. Stress corrosion evaluation of HP 9Ni-4Co-0.30C steel plate welds. [Washington, DC]: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1993.

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Book chapters on the topic "9Ni0"

1

Shi, Kaihua, Xiuqi Zan, and Liao Jun. "Migration of Liquid Phase in Dual-Layer WC-9Ni Cemented Carbides." In High Performance Structural Materials, 1031–41. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0104-9_108.

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2

San Martín, David, Niels H. van Dijk, Yuriy Yagodzinskyy, Ekkes Brück, and Sybrand van der Zwaag. "Contribution to the Understanding of Austenite Stability in a 12Cr-9Ni-4Mo Maraging Steel." In Materials Science Forum, 339–46. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-981-4.339.

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3

Kawata, Hiroyuki, Toshiyuki Manabe, Kazuki Fujiwara, and Manabu Takahashi. "Effect of Carbon Content on Bainite Transformation Start Temperature on Fe–9Ni–C Alloys." In Proceedings of the International Conference on Martensitic Transformations: Chicago, 143–47. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76968-4_22.

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4

Shin, Jae Kyoung, Soo Woo Nam, and Soo Chan Lee. "A Study of Nitrogen Effect on the Characteristics of Creep-Rupture in 18Cr-9Ni Austenitic Steels." In Key Engineering Materials, 409–14. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-978-4.409.

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5

Fultz, B., and J. W. Morris. "Hyperfine Fields in Fe-Ni-X Alloys and their Application to a Study of Tempering of 9Ni Steel." In Industrial Applications of the Mössbauer Effect, 237–66. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-1827-9_13.

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6

"Electron microscopy study of the nanocrystalline precipitates in a 12Cr-9Ni-4Mo-2Cu maraging steel." In Electron Microscopy and Analysis 2001, 69–72. CRC Press, 2001. http://dx.doi.org/10.1201/9781482289510-17.

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7

Filyakin, G. V., V. K. Shamardin, Yu D. Goncharenko, and V. A. Kazakov. "Corrosion damage to 18Cr-9Ni-Ti steel after 25 years of operation in steam-water environments of the VK-50 reactor." In Corrosion Issues in Light Water Reactors, 273–88. Elsevier, 2007. http://dx.doi.org/10.1533/9781845693466.4.273.

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8

Shamardin, V., Yu Goncharenko, G. Filyakin, and V. Kazakov. "Corrosion damage to 18Cr-9Ni-Ti steel after 25 years of operation in steam-water environments of the VK-50 reactor." In Corrosion Issues in Light Water Reactors. CRC Press, 2007. http://dx.doi.org/10.1201/9781439824085.pt4.

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9

Sawaragi, Yoshiatsu, and Susumu Hirano. "The Development of a New 18-8 Austenitic Stainless Steel (0.lC-18Cr-9Ni-3Cu-Nb, N) with High Elevated Temperatures Strength for Fossil Power Boilers." In Mechanical Behaviour of Materials VI, 589–94. Elsevier, 1992. http://dx.doi.org/10.1016/b978-0-08-037890-9.50491-9.

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Conference papers on the topic "9Ni0"

1

Gulenko, A. G., B. Z. Margolin, A. A. Buchatsky, and A. D. Kashtanov. "A Study of the Effect of Long-Term Thermal Aging on the Creep-Rupture Properties of 18Cr-9Ni Steel." In ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-97969.

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Experimental investigations of the creep-rupture properties of metal of intermediate heat exchangers (IHX) from fast breeder reactor BN-600 after its operation during ∼ 170 thousands hours over temperature range of 500–550°C were carried out. IHX was produced from 18Cr-9Ni steel. To study the role of thermal aging part of the IHX metal was annealed at 1000–1050°C for 0.5 hours. Comparison of experimental results of aging metal and annealed metal was carried out and the microstructure and fractography of both materials examined. The effect of aging on the creep-rupture properties of 18Cr-9Ni steel was revealed and described by the physical and mechanical model of intergranular fracture. On the basis of experimental and calculative results an explanation of the effect of long-term aging on the mechanical short-term and creep-rupture properties of 18Cr-9Ni steel has been provided.

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2

WADE, C., G. THEUS, and J. BECK. "Fracture toughness correlation studies of HP-9Ni-4Co-0.30C ASRM casing steel." In 27th Joint Propulsion Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-2071.

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3

Nagasaki, C. "Effect of a magnetic field on crack length measurement of 9NI steel by unloading compliance method." In ADVANCES IN CRYOGENIC ENGINEERING: Proceedings of the International Cryogenic Materials Conference - ICMC. AIP, 2002. http://dx.doi.org/10.1063/1.1472536.

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4

Astafurova, Elena G., Eugene V. Melnikov, Galina G. Maier, and Marina S. Tukeeva. "The effect of hydrogenation on structure and strength properties of austenitic stainless steel Fe-18Cr-9Ni-Ti." In INTERNATIONAL CONFERENCE ON PHYSICAL MESOMECHANICS OF MULTILEVEL SYSTEMS 2014. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4898873.

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5

"Selection of a weld joint configuration for plasma arc welding of HP-9Ni-4Co-0.30C ASRM casing steel." In 27th Joint Propulsion Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1991. http://dx.doi.org/10.2514/6.1991-2072.

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6

COTA ARAUJO, Mahira A., Jean-Bernard VOGT, and Jérémie BOUQUEREL. "Impact of A heat treatment on THE microstructure and THE low cycle fatigue properties of a 9Ni steel." In METAL 2021. TANGER Ltd., 2021. http://dx.doi.org/10.37904/metal.2021.4130.

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7

Tripathy, Haraprasanna, Raj Narayan Hajra, C. Sudha, S. Raju, and Saroja Saibaba. "Measurement of high temperature elastic moduli of an 18Cr-9Ni-2.95 Cu-0.58 Nb-0.1C (Wt %) austenitic stainless steel." In 9TH NATIONAL CONFERENCE ON THERMOPHYSICAL PROPERTIES (NCTP-2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5031717.

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8

Melnikov, Eugene, Galina Maier, Valentina Moskvina, and Elena Astafurova. "Structure, phase composition and mechanical properties of austenitic steel Fe–18Cr–9Ni–0.5Ti–0.08C subjected to chemical-deformation processing." In ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Author(s), 2016. http://dx.doi.org/10.1063/1.4966444.

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9

Buchatsky, Andrey, Boris Margolin, Alexander Gulenko, and Alexander Kashtanov. "Prediction of the Crack Growth Rate Under Creep and Neutron Irradiation for Austenitic Stainless Steels in Initial, Aged and Irradiated Conditions." In ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-97966.

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This work is aimed at investigating the crack growth rate in austenitic steels under creep and neutron irradiation for a material in initial and aged conditions. The crack growth rate under creep is studied for 18Cr-9Ni steel and its welds. This steel and its welds are the base structural materials for manufacturing BN-600 fast reactor components. Experimental investigations of crack growth rate have been performed for the base metal, weld metal and heat-affected zone which were subjected to thermal ageing during operation. It is shown that the fastest crack growth rate is observed for specimens from the base metal. The crack growth rates are compared for the base metal in initial and aged conditions. The initial condition of metal is modeled by annealing thermally aged metal taken from the components after its operation. The investigations show that the crack growth rate for the initial condition is faster than for the aged condition. A method for predicting the crack growth rate under creep and irradiation has been developed on the basis of a physical-and-mechanical intergranular fracture model proposed before [1]. The crack growth rate for the material in initial condition is used as input data to calculate this rate under creep and irradiation according to the developed method.

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