(沈陽工業(yè)大學 材料科學與工程學院， 沈陽 110023)
摘 要: 研究了熱速處理工藝對Al-5%Fe合金力學性能和初生Al3Fe相形貌的影響。結果表明： 未熱速處理時， 初生Al3Fe相為粗大的針片狀或針狀，初生Al3Fe相占基體的面積為40.39%， 合金的力學性能較低， 僅有107MPa； 經熱速處理后， 小部分初生Al3Fe相長成了細小的針狀，絕大部分則長成了針點狀， 初生Al3Fe相占基體的面積達到了50.77%； 由于組織得以細化， 合金的性能有了較大幅度的提高，抗拉強度達到145MPa， 提高幅度為35.5%。
關鍵字: Al-Fe合金；初生Al↓3Fe相； 熱速處理
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
