摘要:采用拉伸试验机和动态机械热分析仪等仪器测试了Fe-17Mn-8Cr合金在多向锻造过程中显微组织、力学性能和阻尼性能等的变化。结果表明:随着多向锻造过程的进行,ε马氏体和γ奥氏体片明显细化,分布更加均匀;合金中的位错密度急剧增大,屈服强度显著提高;多向锻造态合金的阻尼对数衰减率有所下降,但仍具有较高的阻尼性能,其阻尼机制主要是ε马氏体变体交叉程度对γ/ε界面移动以及高密度位错对层错运动的相互作用。
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