(沈阳工业大学 材料科学与工程学院， 沈阳 110023)
摘 要: 研究了热速处理工艺对Al-5%Fe合金力学性能和初生Al3Fe相形貌的影响。结果表明： 未热速处理时， 初生Al3Fe相为粗大的针片状或针状，初生Al3Fe相占基体的面积为40.39%， 合金的力学性能较低， 仅有107MPa； 经热速处理后， 小部分初生Al3Fe相长成了细小的针状，绝大部分则长成了针点状， 初生Al3Fe相占基体的面积达到了50.77%； 由于组织得以细化， 合金的性能有了较大幅度的提高，抗拉强度达到145MPa， 提高幅度为35.5%。
关键字: Al-Fe合金；初生Al↓3Fe相； 热速处理
and mechanical property of Al-Fe alloy
（ School of Materials Science and Engineering,
Shenyang University of Technology, Shenyang 110023, China）
Abstract: The influence of thermal rate treatment on the mechanical property of Al-5%Fe alloy and the morphology of primary Al3Fe phase was studied. The results show that before thermal rate treatment the primary Al3Fe phase in the alloy is thick needle-plate like or needle like. The area percentage of primary Al3Fe phase accounts for 40.39% in the matrix. Tensile strength of the alloy is poor, only 107MPa. But after thermal rate treatment most of primary Al3Fe phases are changed into needle-dot like, a small part is thin needle like. The area percentage of primary Al3Fe phase attains 50.77%. The mechanical property is improved due to the microstructure refinement, tensile strength is increased by 35.5% and reaches 145MPa.
Key words: Al-Fe alloy; primary Al3Fe phase; thermal rate treatment
