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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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应变约束相变对Ti44Ni47Nb9合金恢复应变的影响
, PP. 363-366
Keywords: Ti44Ni47Nb9合金,约束态相变,恢复应变
Abstract:
研究了10%预应变Ti44Ni47Nb9合金应变约束相变加热温度Th对随后自由相变行为的影响,结果表明经过约束相变循环的Ti44Ni47Nb9合金,在随后的自由相变过程输出两段恢复应变εr1和εr2,其值分别随约束相变加热温度Th升高而增加和减小,但合金总恢复应变εr(εr=εr1+εr2)却随Th升高而降低.分析表明恢复应变εr的降低与约束逆相变过程中马氏体相在恢复力作用下拉伸变形导致合金产生了大量塑性变形有关,而两段恢复应变εr1和εr2的形成则与合金约束相变后形成应变量明显不同的M1和M2两部分取向马氏体逆相变相关.
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