Effect of Fe on phase transformation of low temperature Cu-Al-Mn memory alloy

摘要：

The influence of Fe addition on the phase transformation and the microstructure of Cu67Al27-XMn6FeX shape memory alloys are investigated by means of electrical resistivity, X-ray diffraction, scanning electron microscopy and microhardness test. It was shown that the Ms (Martensitic start transformation) temperature of the 850℃ heat-treated alloy exhibit a sharp increase as Fe content increases, by comparison with the alloy without heat-treatment. For example, after 850oC heat-treatment, the Ms temperature of the alloy increases from 52K to 135K when Fe is added from 0 at.％ to 1.5 at.％. The microstructure of as-homogenized Cu67Al27-XMn6FeX alloys consists of Cu3Al matrix, γ2 (Cu9Al4) and α (Cu) phases. Fe element was distributed in precipitates and matrix.

关键词： CuAlMnFe shape memory alloys Martensitic transformation microstructure

作者: Kunpeng Zhu Ning Hu Fushun Liu

作者单位: School of Materials Science and Engineering, Beihang University, Beijing 100191, China

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 474-479

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）