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Journal articles on the topic 'Age hardening'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

KODA, Shigeyasu. "Age-hardening of aluminum alloys." Journal of Japan Institute of Light Metals 36, no. 8 (1986): 525–33. http://dx.doi.org/10.2464/jilm.36.525.

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2

Chen, Zhong Wei, Li Fan, and Pei Chen. "Early Age Hardening Response of Al-Cu-Mg Alloys." Advanced Materials Research 146-147 (October 2010): 1327–30. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.1327.

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The early age hardening behavior in Al-Cu-Mg alloys with fixed Cu content (0.50 wt%) and varying amounts of Mg has been studied by hardness tests and TEM observation. Two alloys both exhibit the early rapid hardening phenomenon based on large solute-aggregates analysis. Ageing time of early stage rapid hardening of Al-0.5Cu-1.99Mg alloys is less than that of Al-0.5Cu-1.48Mg alloys. For two alloys, ageing time of early stage rapid age hardening reduces with artificial ageing temperature increasing. The early stage rapid age hardening is depended on the composition and artificial ageing temperat

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3

Saheb, Nouari, Abdullah Khalil, Abbas Saeed Hakeem, Tahar Laoui, N. Al-Aqeeli, and A. M. Al-Qutub. "Age Hardening Behavior of Carbon Nanotube Reinforced Aluminum Nanocomposites." Journal of Nano Research 21 (December 2012): 29–35. http://dx.doi.org/10.4028/www.scientific.net/jnanor.21.29.

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In the present work, age hardening behavior of CNT reinforced Al6061 and Al2124 nanocomposites, prepared by ball milling and spark plasma sintering, was investigated. The effect of CNT content, annealing time and temperature on the age hardening behavior of the nanocomposites was evaluated and compared to the monolithic alloys prepared and age hardened under the same conditions. It was found that CNTs have a negative influence on the age hardening of the alloys. The alloys displayed standard age hardening behavior i.e. a sharp increase in hardness during initial aging followed by a steady decr

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4

Jahn, R., W. T. Donlon, and J. E. Allison. "Characterization of Age Hardening in a 319 AL Alloy." Microscopy and Microanalysis 4, S2 (1998): 514–15. http://dx.doi.org/10.1017/s1431927600022698.

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319 Al (7.2-7.7wt% Si, 3.3-3.7%Cu, 0.25-0.35%Mg, 0.4%max.Fe, 0.2-0.3%Mn, 0.25%max Zn, 0.25%max Ti) is utilized by the automotive industry for engine blocks and cylinder heads. Detailed understanding of the age hardening behavior of these types of alloys is important to optimize the processing of these components to yield the desired physical properties. Age hardening curves for temperatures between 100 and 305°C have been determined for a commercial grade 319 Al alloy having a dendrite arm spacing of 30(im. Samples for TEM were prepared by conventional grinding and dimpling followed by ion mil

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5

Ichikawa, Fumitaka, Masayoshi Sawada та Yusuke Kohigashi. "Age-hardening Behavior in γ′-phase Precipitation-hardening Ni-based Superalloy". Tetsu-to-Hagane 108, № 1 (2022): 54–63. http://dx.doi.org/10.2355/tetsutohagane.tetsu-2021-053.

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6

Lee, Che-Fu, and Tao-Tsung Shun. "Age Heat Treatment of Al0.5CoCrFe1.5NiTi0.5 High-Entropy Alloy." Metals 11, no. 1 (2021): 91. http://dx.doi.org/10.3390/met11010091.

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In this study, Al0.5CoCrFe1.5NiTi0.5 high-entropy alloy was heat-treated from 500 °C to 1200 °C for 24 h to investigate age-hardening phenomena and microstructure evolution. The as-cast alloy, with a hardness of HV430, exhibited a dendritic structure comprising an (Fe,Cr)-rich FCC phase and a (Ni,Al,Ti)-rich B2 phase, and the interdendrite exhibited a spinodal decomposed structure comprising an (Fe,Cr)-rich BCC phase and a (Ni,Al,Ti)-rich B2 phase. Age hardening and softening occurred at 500 °C to 800 °C and 900 °C to 1100 °C, respectively. We observed optimal age hardening at 700 °C, and allo

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7

KODA, Shigeyasu. "Age-hardening of aluminum alloys. (II)." Journal of Japan Institute of Light Metals 36, no. 9 (1986): 594–606. http://dx.doi.org/10.2464/jilm.36.594.

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8

Khan, Shabana, Jung B. Singh, and A. Verma. "Age hardening behaviour of Alloy 693." Materials Science and Engineering: A 697 (June 2017): 86–94. http://dx.doi.org/10.1016/j.msea.2017.04.109.

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9

Antipov, A. I., V. N. Moiseev, and N. I. Moder. "Age hardening of VT35 titanium alloy." Metal Science and Heat Treatment 38, no. 12 (1996): 522–26. http://dx.doi.org/10.1007/bf01154082.

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10

Ismail, Z. H., and B. Bouchra. "Age-Hardening characteristics of an AlMgSi Alloy." Acta Physica Hungarica 71, no. 1-2 (1992): 3–7. http://dx.doi.org/10.1007/bf03156279.

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11

Bertagnoli, G., G. Mancini, and F. Tondolo. "Numerical modelling of early-age concrete hardening." Magazine of Concrete Research 61, no. 4 (2009): 299–307. http://dx.doi.org/10.1680/macr.2008.00071.

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12

DEXTER, A. R., R. HORN, and W. D. KEMPER. "Two mechanisms for age-hardening of soil." Journal of Soil Science 39, no. 2 (1988): 163–75. http://dx.doi.org/10.1111/j.1365-2389.1988.tb01203.x.

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13

Semboshi, Satoshi, Shigeo Sato, Akihiro Iwase, and Takayuki Takasugi. "Discontinuous precipitates in age-hardening CuNiSi alloys." Materials Characterization 115 (May 2016): 39–45. http://dx.doi.org/10.1016/j.matchar.2016.03.017.

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14

Mayrhofer, P. H., M. Stoiber, and C. Mitterer. "Age hardening of PACVD TiBN thin films." Scripta Materialia 53, no. 2 (2005): 241–45. http://dx.doi.org/10.1016/j.scriptamat.2005.03.031.

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15

Carter, D. H., A. C. McGeorge, L. A. Jacobson, and P. W. Stanek. "Age hardening in beryllium-aluminum-silver alloys." Acta Materialia 44, no. 11 (1996): 4311–15. http://dx.doi.org/10.1016/1359-6454(96)00113-9.

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16

Zaharieva, K., T. Nedeva, and O. Sherbanov. "HARDENING OF CHILDREN UNDER 3 YEARS OF AGE – AN IMPORTANT COMPONENT OF DISPOSITION PROPHYLAXIS." EurasianUnionScientists 2, no. 12(81) (2021): 30–34. http://dx.doi.org/10.31618/esu.2413-9335.2020.2.81.1150.

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The hardening is a variety of activities which help increase the sustainability of the organisam to influnece the factors of the outer environment. Through natural factors and other physical means, the hardening aims to achieve perfection over the thermoregulation of the organisam. In its core the hardening is a conditional reflective process that is done through different outer irritants - air, sun baths, swimming.

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17

Yamasaki, S., and K. Takano. "Effect of Nitrogen on Age-Hardening of Metastable Austenitic Stainless Steel after Cold Drawing." Materials Science Forum 879 (November 2016): 2164–69. http://dx.doi.org/10.4028/www.scientific.net/msf.879.2164.

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Metastable austenitic stainless steels transform to the deformation-induced martensite by cold working. Especially, metastable stainless steel with high nitrogen content has high age-hardening property after aging treatment. In this work, effect of nitrogen on age-hardening of metastable austenitic stainless steel (SUS304: 0.04% N, type-SUS201: 0.18% N) after cold drawing was investigated, and age-hardening mechanism was elucidated. Strength after cold drawing of SUS201 containing high N is higher than that of SUS304, and the age-hardening of SUS201 is significantly higher than that of SUS304

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18

Westermann, Ida, Odd Sture Hopperstad, Knut Marthinsen, and Bjørn Holmedal. "Work- and Age-Hardening Behaviour of a Commercial AA7108 Aluminium Alloy." Materials Science Forum 618-619 (April 2009): 555–58. http://dx.doi.org/10.4028/www.scientific.net/msf.618-619.555.

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Understanding and prediction of the mechanical properties of aluminium alloys are of great importance with respect to e.g. strength requirements and forming operations. In the 7xxx alloying system several mechanisms influence the hardening behaviour of the alloys, e.g. particle size and distribution, dislocation density, and alloying elements in solid solution. This work is an experimental study of work- and age-hardening considering a commercial AA7108 alloy in the as-cast and homogenized condition. Tensile specimens have been exposed to a solution heat treatment and a two-step age-hardening

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19

Hansen, Vidar, Aferdita Vevecka-Priftaj, J. Fjerdingen, Y. Langsrud, and J. Gjønnes. "The Influence of Silicon on Age Hardening Kinetics and Phase Precipitation in Al-Mg-Zn Alloys." Materials Science Forum 519-521 (July 2006): 579–84. http://dx.doi.org/10.4028/www.scientific.net/msf.519-521.579.

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Solid solution treatment at 450°C and 550°C and subsequent two step age hardening at 100°C and 150 °C up to 144 hrs. have been carried out for two conventional and four experimental 7xxx type of alloys with different Mg, Zn, Fe and Si content. The influence of silicon on phase and kinetics of age hardening zones and particles has been followed. Increase in silicon required higher solid solution temperature in order to achieve reasonable age hardening response. High silicon alloys, solid solution treated at high temperature, have tendency to recrystallize during aging. The GP-zone formation is

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20

Wu, Hai Jun, Xiao Qing Zuo, Ying Wu Wang, Kun Hua Zhang, and Yu Zeng Chen. "Age-Hardening Behavior of Pd-Ag-Sn-In-Zn Alloy." Advanced Materials Research 1028 (September 2014): 14–19. http://dx.doi.org/10.4028/www.scientific.net/amr.1028.14.

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Pd-Ag-Sn-In-Zn alloy was subjected to isothermal aging treatments at 400°C, 500°C, and 650°C. Age-hardening behaviour and related microstructure changes of the aged alloy were studied by means of hardness test, X-ray diffraction (XRD), scanning electron microscopic (SEM) and energy dispersive spectrometer (EDS). The results indicate that the hardness of the alloy reaches a highest value of 348Hv after aging at 650°C for 20min. Further increasing the aging time leads to softening. The hardening of the alloy at early stage of the age-hardening at 650°C is ascribed to the formation of lamellar (α

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21

Wang, Gui Qing, Yan Liu, Guo Cheng Ren, and Zhong Kui Zhao. "Comparing Age Hardening Behaviors of Al-3Cu and Al-8Si-3Cu Alloys." Advanced Materials Research 146-147 (October 2010): 1667–70. http://dx.doi.org/10.4028/www.scientific.net/amr.146-147.1667.

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The aging hardening behaviors of Al-8Si-3%Cu (wt%) and Al-3Cu (wt%) alloys have been investigated. Samples were solution treated at 500 for 24 h followed by water quenching before aging. Hardness has been measured for quenched samples aging at 150°C. Strong age hardening occurs for Al-3Cu alloy and hardness increases by about 60% after peak aging. There is a hardness decrease in the early aging stage of Al-8Si-3Cu alloy and hardness increases by about 15% after peak aging. The age precipitation behaviors have been analyzed using DSC and TEM. Effects of microstructure characteristics on age pre

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22

Zhou, Ying, and Gui Qing Wang. "Analyzing Age Hardening Behaviors of an Al-Si-Mg Cast Alloy." Advanced Materials Research 189-193 (February 2011): 3945–48. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.3945.

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The age hardening process for permanent mold samples of Al-7Si-0.3Mg cast alloy has been investigated by hardness measurement, differential scanning calorimetry (DSC), transmission electron microscope (TEM) and electron probe micro analyzer (EPMA). Age hardening results show that the age hardening response of Al-7Si-0.3Mg alloy is independent on cooling rate. There is a hardness value decrease about 10 HV after T4 treatment. Hardness value after as-cast aging at 150 °C for 20 h is just a little smaller than that after T6 treatment for permanent mold samples. The precipitation behaviors during

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23

Luo, Xiaobing, Chongchen Xiang, Feng Chai, Zijian Wang, Zhengyan Zhang, and Hanlin Ding. "A Comparison Study on the Strengthening and Toughening Mechanism between Cu-Bearing Age-Hardening Steel and NiCrMoV Steel." Materials 14, no. 15 (2021): 4276. http://dx.doi.org/10.3390/ma14154276.

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Cu-bearing age-hardening steel has significant potential in shipbuilding applications due to its excellent weldability as compared to conventional NiCrMoV steel. Not much research has been carried out to analyze the differences in the mechanisms of strength and toughness between Cu-bearing age-hardening and NiCrMoV steel. Both steels were heat treated under the same conditions: they were austenized at 900 °C and then quenched to room temperature, followed by tempering at 630 °C for 2 h. The uniaxial tensile test reveals that the Cu-bearing age-hardening steel exhibits relatively lower strength

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24

Feng, Chai, Cai Fu Yang, Su Hang, Yong Quan Zhang, and Xu Zhou. "Cracking Resistance of Cu-Bearing Age-Hardening Steel." Key Engineering Materials 353-358 (September 2007): 2015–20. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.2015.

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In this paper, the weldablity of a low-carbon Cu-bearing age-hardening steel was evaluated using Y-groove cracking evaluation test. The results show that the steel has a low hardenability characteristic and cold-cracking susceptibility. It is also indicated that a crack-free weldment can be obtained during welding of this type of steel even at an ambient temperature as low as -5°C as well as in an absolute humidity lower than 4000Pa without any preheat treatment. A slight preheat treatment can prevent the joint from cracking when welding is carried out at lower ambient temperature or in higher

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25

Humaun Kabir, Abu Syed, Jing Su, Mehdi Sanjari, In Ho Jung, and Stephen Yue. "Age-Hardening Response of Mg-Al-Sn Alloys." Materials Science Forum 828-829 (August 2015): 250–55. http://dx.doi.org/10.4028/www.scientific.net/msf.828-829.250.

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Precipitation hardening has been used before as one of the most effective strengthening methods for many metallic alloys. However, this method has not been studied completely in magnesium alloys, and the numbers of precipitation hardenable wrought Mg alloys are still very limited compared to aluminum alloys and steels. The age hardening responses of Mg-Al-Sn alloys in cast-homogenized condition were investigated by isothermal aging at 200°C for prolonged time. It was found that hardness can be improved significantly for the alloy with higher amounts of tin. The improvement in hardness was reas

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26

Krishna, S. Chenna, K. Thomas Tharian, Bhanu Pant, and Ravi S. Kottada. "Age-Hardening Characteristics of Cu-3Ag-0.5Zr Alloy." Materials Science Forum 710 (January 2012): 563–68. http://dx.doi.org/10.4028/www.scientific.net/msf.710.563.

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Among the copper alloys, the Cu-3Ag-0.5Zr alloy is one of the potential candidates for combustion chamber of liquid rocket engine because of its optimum combination of high strength with thermal conductivity. The present study is a detailed characterization of microstructure, strength, and electrical conductivity during the aging treatment. The aging cycle for Cu-3Ag-0.5Zr alloy after the solution treatment (ST) was optimized to obtain higher hardness without compromising on electrical conductivity. The precipitates responsible for strengthening in aged samples are identified as nanocrystallin

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27

YANAGAWA, Masahiro, Shojiro OIE, and Mutsumi ABE. "Age-hardening process of Al-Mg-Si alloys." Journal of Japan Institute of Light Metals 43, no. 3 (1993): 146–51. http://dx.doi.org/10.2464/jilm.43.146.

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28

Shun, Tao-Tsung, Liang-Yi Chang, and Ming-Hua Shiu. "Age-hardening of the CoCrFeNiMo0.85 high-entropy alloy." Materials Characterization 81 (July 2013): 92–96. http://dx.doi.org/10.1016/j.matchar.2013.04.012.

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29

Durmuş, Hülya Kaçar, and Cevdet Meriç. "Age-hardening behavior of powder metallurgy AA2014 alloy." Materials & Design 28, no. 3 (2007): 982–86. http://dx.doi.org/10.1016/j.matdes.2005.11.022.

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30

Guo, F., X. F. Huang, Z. W. Xie, et al. "Understanding the age-hardening mechanism of CrWN coating." Thin Solid Films 711 (October 2020): 138298. http://dx.doi.org/10.1016/j.tsf.2020.138298.

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31

Rogström, L., L. J. S. Johnson, M. P. Johansson, M. Ahlgren, L. Hultman, and M. Odén. "Age hardening in arc-evaporated ZrAlN thin films." Scripta Materialia 62, no. 10 (2010): 739–41. http://dx.doi.org/10.1016/j.scriptamat.2010.01.049.

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32

Song, Z. Y., Q. Y. Sun, L. Xiao, et al. "Age hardening and its modeling of Ti–2.5Cualloy." Materials Science and Engineering: A 568 (April 2013): 118–22. http://dx.doi.org/10.1016/j.msea.2013.01.003.

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33

Mulligan, C. P., R. Wei, G. Yang, P. Zheng, R. Deng, and D. Gall. "Microstructure and age hardening of C276 alloy coatings." Surface and Coatings Technology 270 (May 2015): 299–304. http://dx.doi.org/10.1016/j.surfcoat.2015.02.030.

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34

del Valle, J. A., A. C. Picasso, I. Alvarez, and R. Romero. "Age-hardening behavior of Inconel X-750 superalloy." Scripta Materialia 41, no. 3 (1999): 237–43. http://dx.doi.org/10.1016/s1359-6462(99)00151-7.

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35

Park, Won-Wook, and Tong-Hoon Kim. "Age hardening phenomena in rapidly solidified Al alloys." Scripta Metallurgica 22, no. 11 (1988): 1709–14. http://dx.doi.org/10.1016/s0036-9748(88)80270-9.

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36

Soffa, W. A., and D. E. Laughlin. "High-strength age hardening copper–titanium alloys: redivivus." Progress in Materials Science 49, no. 3-4 (2004): 347–66. http://dx.doi.org/10.1016/s0079-6425(03)00029-x.

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37

Medrano, S., and C. W. Sinclair. "Transient strain age hardening of Al–Mg alloys." Materialia 12 (August 2020): 100796. http://dx.doi.org/10.1016/j.mtla.2020.100796.

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38

Jia, S. G., X. M. Ning, P. Liu, M. S. Zheng, and G. S. Zhou. "Age hardening characteristics of Cu-Ag-Zr alloy." Metals and Materials International 15, no. 4 (2009): 555–58. http://dx.doi.org/10.1007/s12540-009-0555-0.

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39

MORRIS, D., L. REQUEJO, and M. MUNOZMORRIS. "Age hardening in some Fe–Al–Nb alloys." Scripta Materialia 54, no. 3 (2006): 393–97. http://dx.doi.org/10.1016/j.scriptamat.2005.10.022.

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40

Ning, Y. T., S. H. Whang, S. C. Hsu, and R. V. Raman. "Age-hardening response in rapidly quenched molybdenum alloys." Materials Science and Engineering 98 (February 1988): 363–67. http://dx.doi.org/10.1016/0025-5416(88)90187-5.

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41

Shun, Tao-Tsung, and Yu-Chin Du. "Age hardening of the Al0.3CoCrFeNiC0.1 high entropy alloy." Journal of Alloys and Compounds 478, no. 1-2 (2009): 269–72. http://dx.doi.org/10.1016/j.jallcom.2008.12.014.

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42

Mendoza, L. Vargas, A. Barba, A. Bolarín, and F. Sánchez. "Age hardening of Ni–P–Mo electroless deposit." Surface Engineering 22, no. 1 (2006): 58–62. http://dx.doi.org/10.1179/174329406x84976.

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43

Blake, N., and M. A. Hopkins. "Constitution and age hardening of Al-Sc alloys." Journal of Materials Science 20, no. 8 (1985): 2861–67. http://dx.doi.org/10.1007/bf00553049.

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44

Lee, Che-Fu, and Tao-Tsung Shun. "Age Hardening of the Al0.5CoCrNiTi0.5 High-Entropy Alloy." Metallurgical and Materials Transactions A 45, no. 1 (2013): 191–95. http://dx.doi.org/10.1007/s11661-013-1931-4.

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45

Ahmed, T., F. H. Hayes та H. J. Rack. "Age-hardening response of β2 TiAlV". Materials Science and Engineering: A 192-193 (лютий 1995): 155–64. http://dx.doi.org/10.1016/0921-5093(94)03230-0.

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46

Macchi, C. E., A. Somoza, and J. F. Nie. "Age-hardening in a commercial Mg-based alloy." physica status solidi (c) 4, no. 10 (2007): 3538–41. http://dx.doi.org/10.1002/pssc.200675831.

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47

Ringer, S. P., and K. Hono. "Microstructural Evolution and Age Hardening in Aluminium Alloys." Materials Characterization 44, no. 1-2 (2000): 101–31. http://dx.doi.org/10.1016/s1044-5803(99)00051-0.

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48

Hirosawa, Shoichi, Yong Peng Tang, Zenji Horita, Seung Won Lee, Kenji Matsuda, and Daisuke Terada. "Three Strategies to Achieve Concurrent Strengthening by Ultrafine-Grained and Precipitation Hardenings for Severely Deformed Age-Hardnable Aluminum Alloys." Advanced Materials Research 1135 (January 2016): 161–66. http://dx.doi.org/10.4028/www.scientific.net/amr.1135.161.

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In this paper, comprehensive studies on the age-hardening behavior and precipitate microstructures of severely deformed and then artificially aged aluminum alloys have been conducted to clarify whether or not concurrent strengthening by ultrafine-grained and precipitation hardenings can be achieved. From our graphically-illustrated equivalent strain dependence of both the attained hardness and increment/decrement in hardness during aging (i.e. age-hardenability), three strategies to maximize the combined processing of severe plastic deformation and age-hardening technique are proposed. (1) Low

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49

Ding, Zhu, Xiao Dong Wang, Bi Qin Dong, Zong Jin Li, and Feng Xing. "Early Age Property Study of Phosphate Cement by Electrical Conductivity Measurement." Key Engineering Materials 544 (March 2013): 409–14. http://dx.doi.org/10.4028/www.scientific.net/kem.544.409.

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The properties and electrical conductivity at early age of magnesium phosphate cement (MPC) was studied. Electrical resistivity or conductivity had been used for explaining the microstructure development of cement materials. In the current study, an electrodeless resistivity meter (ERM) was used to study the early property of MPC, which was mixed with and without fly ash respectively. The hardening process was investigated by the conductivity variation, incorporating with strength development and temperature rise during the initial reaction. The products and microstructure morphology of MPC pa

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50

AU, KA KI (KATIE), MICHAEL HODGSON, TIMOTIUS PASANG, and YU LUNG CHIU. "STUDIES ON AGE HARDENING FOR IMPROVEMENT OF 6261 AND 6060 EXTRUDED ALUMINIUM ALLOYS." International Journal of Modern Physics B 24, no. 15n16 (2010): 2255–60. http://dx.doi.org/10.1142/s0217979210064757.

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The magnesium silicide precipitates in the 6XXX series alloy are the main components contributing to the heat treatable properties and T6 strength of the alloy, which is influenced by the size, morphology and distribution of this phase. During the extrusion process, the strength contributing phase, magnesium silicide is supposed to dissolve and form again in a controlled state during age hardening. Whereas the intermetallic AlFeSi phase has little if any influence on the strength, the β phase of this intermetallic is known to cause brittle fracture of this alloy, as opposed to the less detrime

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