摘要
根据规则固溶体的热力学模型，分别计算铁锰硅、铁锰硅铬、铁锰硅铬镍形状记忆合金的层错能，研究硅、锰、铬、镍合金元素对铁基形状记忆合金层错能的影响。结果表明，锰、铬、镍元素均提高铁锰硅系合金层错能，而硅则降低合金的层错能，其中每１％（原子分数）元素变化对合金层错能影响比例，硅∶锰∶铬∶镍为：－０．２７∶１∶１．１∶１．７。为了获得较佳的形状记忆效应，加入铬、镍元素的同时。
The stacking fault energy of Fe-Mn-Si,Fe-Mn-Si-Cr and Fe-Mn-Si-Cr-Ni alloys respectively is calculated according to the thermodynamic model.The calculated results show that the stacking fault energy of Fe-Mn-Si system alloys decreases when Si% increases and the stacking fault energy of the alloys increases when Mn%,Cr% and Ni% increases.The effect ratio of alloy elements on stacking fault energy is -0.2711.11.7 ( Si%Mn%Cr%Ni% ).To obtain good SME,the stacking fault energy of alloys should be as low as possible.Manganese content decreases when adding chrome and nickel in order to low intrinsic stacking fault energy.
出处
《功能材料》
EI
CAS
CSCD
北大核心
1999年第2期164-165,共2页
Journal of Functional Materials
基金
机械部资助
吉林省科委资助
关键词
合金元素
铁基
形状记忆合金
层错能
alloy elements
ironbased shape memory alloy
stacking fault energy
