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Effects of Predeformation on the Reverse Martensitic Transformation of TiNi Shape Memory Alloy 被引量:14
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作者 Yanjun ZHENG Lishan CUI +1 位作者 Fan ZHANG Dazhi YANG 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2000年第6期611-614,共4页
DSC was used to study the effects of predeformation on the reverse martensitic transformation of near-equiatomic TiNi alloy. Both the start temperature As and the finish temperature Af of the reverse transformation in... DSC was used to study the effects of predeformation on the reverse martensitic transformation of near-equiatomic TiNi alloy. Both the start temperature As and the finish temperature Af of the reverse transformation increased with increasing degree of predeformation, but the algebraic difference between As and Af decreased with increasing predeformation until it reached a minimum value, then remained unchanged with further deformation. Transformation heat also increased with increasing predeformation until it reached a maximum value, then decreased with further predeformation. All the phenomena above were considered to be closely related with the release of elastic strain energy during predeformation. 展开更多
关键词 TINI Effects of predeformation on the Reverse Martensitic Transformation of TiNi Shape Memory Alloy
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EFFECT OF PREDEFORMATION MANNER ON SEMI-SOLID STRUCTURE OF AZ61 MAGNESIUM ALLOY IN SIMA PROCESS 被引量:3
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作者 G.P. Chen T.R. Zhou H. Yan 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2008年第3期197-204,共8页
The effect of predeformation manner, predeformation ratio and isothermal heat-treat parameter on the non-dendrite structure of AZ61 magnesium alloy in SIMA process was studied. Under coequal heat-treat condition, the ... The effect of predeformation manner, predeformation ratio and isothermal heat-treat parameter on the non-dendrite structure of AZ61 magnesium alloy in SIMA process was studied. Under coequal heat-treat condition, the impact of the hot upsetting pre- deformation on semi-solid microstructure in SIMA process was compared with that of the cold compressive predeformation. The results indicate that non-dendrite microstructure in AZ61 magnesium alloy billets can be obtained by hot or cold upsetting predeformation in SIMA process, although their mechanisms of evolution are different. Increasing hot or cold upsetting predeformation ratio can enhance the effect and quality of the non-dendrite microstructure formed before storage energy up to saturation, but the proper isothermal temperature and holding time should be selected. 展开更多
关键词 AZ61 magnesium alloy Strain-induced melt activated (SIMA) Hot and cold upsetting predeformation Non-dendrite structure
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Influence of Predeformation on Shape Memory Effect in a Fe-Mn-Si-Ni Polycrstalline Alloy
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作者 王永前 来忠红 +1 位作者 杨建华 赵连城 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1996年第4期66-68,共3页
InfluenceofPredeformationonShapeMemoryEffectinaFe-Mn-Si-NiPolycrstallineAlloyWANGYongqian;LAIZhonghong;YANGJ... InfluenceofPredeformationonShapeMemoryEffectinaFe-Mn-Si-NiPolycrstallineAlloyWANGYongqian;LAIZhonghong;YANGJianhua;ZHAOLianch... 展开更多
关键词 ss: SHAPE memeroy EFFECT Fe-Mn-Si-Ni ALLOY predeformation
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