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Remarkable improvement of shape memory effect in an Fe-Mn-Si-Cr-Ni-C alloy through controlling precipitation direction

机译:通过控制析出方向可显着改善Fe-Mn-Si-Cr-Ni-C合金的形状记忆效应

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摘要

To improve shape memory effect in Fe-Mn-Si-Cr-Ni based alloys, the effects of ageing after pre-deformation and ageing without pre-deformation on the precipitation sites of Cr_(23)C_6 carbides and shape memory effect were investigated. The results showed that through ageing after 10% tensile pre-deformation at room temperature, in an Fe-Mn-Si-Cr-Ni-C alloy Cr_(23)C_6 carbides were aligned along some directions inside the austenite grains and the shape memory effect was remarkably improved as compared to ageing without pre-deformation. It can be expected that through ageing after moderate pre-deformation, other aligned carbides and nitrides can be attained and shape memory effect be further improved.
机译:为了提高Fe-Mn-Si-Cr-Ni基合金的形状记忆效应,研究了预变形后的时效和无预变形时效对Cr_(23)C_6碳化物析出部位的影响以及形状记忆效应。结果表明,通过在室温下进行10%拉伸预变形后的时效,Fe-Mn-Si-Cr-Ni-C合金中Cr_(23)C_6碳化物沿奥氏体晶粒内的某些方向排列并具有形状记忆与没有预变形的时效相比,效果显着提高。可以预料,通过适度的预变形后的时效,可以获得其他取向的碳化物和氮化物,并且形状记忆效果进一步提高。

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