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TEM Studies on Martensitic Transformation in Fe-Cr-W-V-C Alloy伍尚华,刘禹门摘 要:<正> The martensitic transformation inFe-Cr-W-V-C alloy has been investigated byTEM.The habit plane of martensite is near (252)f,the austenite/martensite orientation relationship isKurdjumov-Sachs’.In the martensite plates thereare twins on (112)[ 1]b,dislocation tangles......
国有色金属学报, 2013, 23(1): 130-133. LI Yan feng, GAO Bao dong, YIN Xiang qian. Effect of Ni content on phase transformation and mechanical properties of NiTi shape memory alloys[J]. The Chinese Journal...状记忆效应[J]. 中国材料进展, 2012, 31(12): 40-47. CAI Wei, MENG Xiang-long, ZHAO Xin-qing, CUI Li-shan, XU Hui-bin. Martensitic transformation and shape memory effect of Ti-Ni based high temperature shape memory......
钛合金中的正交相变及其应用杨锐1,1,郝玉琳1,董利民1,卢斌1(1.辽宁省沈阳市科学院金属研究所)摘 要:本文概述了钛合金及Ti3Al经过渡族元素合金化形成的正交相的联系与区别,简要总结了作者研究组近期针对这些正交相变的研究结果,分析了需进一步澄清的科学问题.结合低弹性模量超弹性钛合金研制,冷镦紧固件丝材超细网篮显微组织制备以及Ti2AlNb基合金板材和箔材研发3个实例,展示了正交相变规律的实际应用.关键词:β类钛合金; 应力诱发马氏体相变; 相稳定性; Ti2AlNb......
Irreversibility and transformation randomness of thermoelastic martensitic transformation in Ni–Ti alloysTian-Wei Liu,Yan-Jun Zheng,Li-Shan CuiDepartment of Materials Science and Engineering, China... defects and more obvious irreversibility.On the other hand,defects generated in thermoelastic martensitic transformation are responsible for the hysteresis of transformations.Therefore,the randomness......
Effect of high Pressure on the Solid-State Phase Transformation Microstructure of Cu-Zn Alloy He Miao1,Yang Kun1,Xu Jin1,Liu Jianhua1,Zhang Ruijun1 (1.State Key laboratory of Metastable Materials Science and Technology, Yan Shan University, Qinhuangdao 066004, China) Abstract:The solid-state phase transformation microstructure of Cu-Zn alloy under different high pressure were investigated......
in the heating or cooling DSC curves, respectively, indicating that one phase transformation appear in each run. The martensitic transformation temperatures were determined by the tangent method from the DSC...; Abstract: Ni54Mn25Ga21 alloy was prepared to investigate the microstructure, martensitic transformation and high-temperature shape-memory......
martensitic transformation nor reverse transformation can be observed in the range from-150 to 150 ℃. On the one hand, the phase transformation temperature is probably out of the scope of the present experimental temperature. On the other hand, the addition of Fe element probably suppresses first-order martensitic transformation or reverse transformation, and consequently the second-order-like phase......
, the critical temperatures and phase transformation temperatures were determined from the dilatometric curves, which were used to determine the continuous cooling transformation (CCT) diagram of 28CrMnMoV steel.... The bainite appears when the cooling rate is in the temperature interval of 1-5 ℃/s, and the martensitic transformation occurs when the cooling rate is greater than 5 ℃/s. Lower carbon content increases......
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361005, China Received 21 January 2010; accepted 10 May 2010 Abstract: The microstructure, martensitic transformation behavior, mechanical and shape memory properties of Ni56Mn25-xCrxGa19 (x=0, 2, 4, 6) alloys were investigated. Single phase of martensite with tetragonal structure is present for x=0, and dual-phase containing martensite and γ phase is observed for x≥2. The martensitic......