本文讨论了在TMT处理中影响晶粒形状的因素及晶粒形状的控制方法,重点分析了晶粒形状对材料超塑变形的影响.首先讨论了轴比对超塑变形主要机制,晶界滑移速度,以及各机制对总变形贡献的影响,进而讨论了轴比对超塑变形区间转变行为的影响.提出了超塑变形的临界轴比概念.并采用Al-Zn-Mg合金对理论分析结果进行了验证.
The effects of grain shape on the accommodation velocity of grainboundary sliding, which is the dominant mechanism in superplastic deformation, onthe contribution of each mechanism to the total strain and the region transitionstrain rate have been discussed. A new concept, critical aspect ratio for superplas-ticity, has been proposed. The results predicated by means of the new concept werecompared with those experimentally observed in an Al-Zn-Mg alloy.
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| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] |
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