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DYNAMIC MECHANICAL BEHAVIOURS OF HIGH Mo AUSTENITIC STAINLESS STEEL DURING HOT DEFORMATION

XU Yourong , GU Qing , WANG Deying , Shanghai University of Science and Technology , Shanghai , ChinaGU Jufang , Q U Tiancai , Shanghai Iron and Steel Research Institute , Shanghai , China XU Yourong , Professor , Department of Materials Science , Shanghai University of Science and Technology , Shanghai 201800 , China

金属学报(英文版)

The dynamic mechanical behaviours of super low carbon high Mo austenitic stainless steel (00Cr20Nil8Mo6CuN)during hot deformation have been studied by using Formaster-Press hot working simulator. The hot deformation equation, as well as the relationship between peak strain, peak stress and Zener-Hollman parameter, together with the deformation activation energy have been resulted through the experiments.

关键词: hot deformation , null , null , null , null

A Preparing Process of Quick-moving Leaf for TiNi Alloy

Zichang SHAO , Jingcheng WANG , and Wei ZHANG (No. 1 Materials Research Dept. , Shanghai Iron and Steel Research Institute , Shanghai , 200940 , China)(To whom correspondence should be addressed)

材料科学技术（英文）

This paper reports a preparing process of quick moving leaf for TiNi shape memory alloy. Using the process. a series of quick moving leaves having different points of temperature. from 58 to 100℃. at which they jump up have been made. The quick moving leaves will be fully qualified as the electric switches that open and close themselves at proper temperatures.

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A Positron Study of Hysteresis Temperature in Ti-Ni Alloy

Jingcheng WANG and Guiying QIN (Shanghai Key Lab. of Metal Functional Materials , Shanghai Iron and Steel Research Institute , Shanghai 200940 , China)(To whom correspondence should be addressed)Guilin ZHANG ana Wanhui ZHENG (Shanghai Nuclear Research Instit

材料科学技术（英文）

For Ti-Ni alloy it is exceedingly difficult to prepare an element that has a desired and defined hysteresis temperature for its preparing process is not pedect at present. Because the mechanism of transformation in Ti-Ni has not been fully clarified, it is far more exceedingly difficult to explain the hysteresis temperature only by using the traditional metal physics techniques., But positron annihilation seems to be a suitable method for it. The positron annihilation measurements showthat the hysteresis temperature may be controlled mainly by the relative fraction of the defectscontained in a two-way shape memory element.

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