摘要
研究了热处理工艺对Fe-28Mn-4Si（Mg）合金形状记忆效应的影响．结果表明：合金形状记忆效应来源于应力诱发马氏体相变及其逆转变．固溶处理和训练处理，可对合金母相奥氏体产生强化作用，使其在应力诱发马氏体相变过程中不易发生滑移变形（滑移变形不利于形状回复），从而改善了合金的形状记忆效应．对合金热轧无缝管内径施以5％形变量，形变恢复率达45％．该恢复率足以用作管道连接管接头等紧固连接件．
Influence of heat treatment process on shape memory effect (SME) inFe-28Mn-4Si (adding microelement Magnesium) alloy were studied. The results show thatSME of alloy originates from stress induced γ- ε martensitic transformation and itsreversible transformation, SME can be improved by thermal mechanical training treatmentand solution treatment by strengthening austenitic matrix. When the inside diameter of hotrolled seamless alloy pipes is expended by 5%, the strain recovery ratio will be 45%, andthis strain recovery ratio is enough for pipe joints.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1997年第1期105-108,共4页
Journal of University of Science and Technology Beijing
基金
冶金部资助
