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首页> 外文期刊>Transactions of Nonferrous Metals Society of China >Superplastic deformation of TiAl based alloy
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Superplastic deformation of TiAl based alloy

机译：TiAl基合金的超塑性变形

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摘要

The tensile properties of thermomechanically processed Ti-33Al-3Cr-0.5Mo (mass fraction, /100) alloy were determined at 1000 dge. C. In an initial strain rate range of 2.0 × 10~-4～6.0 × 10~-4s~-1 superplas- tic deformation behaviour of fine grained specimens was observed, and the relative elongations ranging from 200/100～305/100 were obtained. After deformation grain size became finer, a lot of dislocations were found. Combined with TEM observations, it was suggested that superplastic deformation was controlled by grain Boundary sliding accomodated by movement of dislocation and dynamic recrystallization.
机译：在1000 dge下测定热机械加工的Ti-33Al-3Cr-0.5Mo（质量分数，/ 100）合金的拉伸性能。 C.在2.0×10〜-4〜6.0×10〜-4s〜-1的初始应变速率范围内，观察到细颗粒试样的超塑性变形行为，相对伸长率为200/100〜305/100获得了。变形晶粒尺寸变细之后，发现许多位错。结合透射电镜观察，表明超塑性变形是由位错运动和动态再结晶所伴随的晶界滑动控制的。

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