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OALib Journal期刊
ISSN: 2333-9721
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块体纳米晶al--zn--mg--cu合金的微区力学性能和变形机制
Keywords: 金属材料,？纳米压痕,？纳米晶al--zn--mg--cu合金,？室温蠕变,？变形机制
Abstract:
？研究了块体纳米晶al--10zn--2.8mg--1.8cu合金热处理前后的微区力学性能和变形机制,结果表明:块体纳米晶al--10zn--2.8mg--1.8cu合金经t6处理后杨氏模量没有明显的变化,硬度明显提高；在sps试样中可观察到明显的室温蠕变和剪切带,随着应变速率的增加,室温蠕变越来越明显,但是剪切带越来越不明显;而在t6态试样中很难观察到室温蠕变和剪切带。t6处理改变了第二相粒子的形貌和分布,是产生这一现象的原因。
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