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and aging time, which substantially improves the martensitic transformation critical stress of the alloy, whereas the bainite only slightly affects the superelasticity. This behavior is attributed... critical stress and the superelasticity of columnar-grained Cu71Al18Mn11 SMA with aging-temperature and aging time are described by the Austin–Rickett equation, where the activation energy of bainite......
two peak values and reach saturated values with increasing aging time, while the elongation decreases sharply to the minimum value and changes slightly later. The deformation and fracture behaviors...Effect of artificial aging on the deformation behavior of an Al-1.01Mg-0.68Si-1.78Cu alloyHE Lizi a, CHEN Yanbo b, ZHANG Haitao a, and CUI Jianzhong a a Key Lab of the Ministry of Education of China......
Trans. Nonferrous Met. Soc. China 25(2015) 3921-3927 Effect of aging time on corrosion behavior of as-forged AZ80 magnesium alloy Hui-juan LIAO1, Xiao-feng ZHOU1, Hui-zhong LI1,2,3, Min DENG1, Xiao..., SEM and potentiodynamic polarization curve measurement. The results show that the corrosion rate of the alloy decreases dramatically with the increase of aging time during the initial aging stage......
not only to the aging temperature and the impurity concentration of the metal, but also to the aging time. Residual resistance ration is improved with the increase of beryllium purity. The residual resistance ration value of pure beryllium is 20-147, and it changes with the aging temperature and aging time. High pure beryllium has ageing tendency just as alloy, so it can be used as aging low alloy......
; 文章编号:1672-7207(2007)01-0030-06 Evolution of intermetallic compounds in SnAg and SnAgCu lead-free solder joints during aging LI Xiao-yan1, YANG Xiao-hua2, WU...: The types, morphology and distribution of intermetallic compounds (IMCs), and the evolution of the types and composition and morphology of IMC in the joints during the following aging process were......
endings of the plateau correspond to the precipitation start (Ps) and finish (Pf) times, respectively. The Pf obtained from the creep curve coincides with the peak hardness time (tp) at the aging hardening...A creep technique for monitoring the aging precipitation in Cu-Nb bainitic steelsXuemin Wang1), Bing Cao2), Guifeng Zhou3), Chuang Li1), and Xinlai He1) 1) Department of Materials Physics, University......
, China) Abstract: The time-temperature-property (TTP) curves of Al-5.0Zn-3.0Mg-1.0Cu-0.1Zr alloy were studied using interrupted quenching method, and the quench sensitivity of the alloy was discussed based on the compositions compared with 7050 and 7085 alloy. The results show that the nose temperature of TTP curves is 325 ℃ and transformation time is 1.554 s; the critical temperature range......
Effects of aging on the microstructure of a Cu-Al-Ni-Mn shape memory alloyU.Sari1,T.Kirindi2,F.Ozcan3,M.Dikici41. Department of Elementary Education,Elementary Science Education,Kirikkale University.... Department of Physics,Kirikkale University,Kirikkale 71450,Turkey摘 要:The influence of aging on the microstructure and mechanical properties of Cu-11.6wt......
relationship with the square root of aging time. Thereafter, however, the thickness increased very slowly with longer aging time. When the joints were aged for 1000 h, a new IMC phase, (Cu,Ni)5Zn8... microstructure in (Sn-9Zn)-2Cu/Ni joints during soldering as well as isothermal aging were studied. The wetting ability of eutectic Sn-9Zn solder on Ni substrate was markedly improved by adding 2 wt pct Cu......
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