付大军,黄立国

• 1:辽宁工程技术大学材料科学与工程学院

摘要(Abstract)：

研究了时效处理对轧制Al-5Fe基合金组织和断口形貌的影响。结果表明:轧制Al-5Fe基合金经过固溶时效处理后,在基体中能析出Mg2Si球状相及块状的Al-Si-Mn-Fe相和Al-Si-Mn-Fe-Mg相,随着时效时间的增加,β相在晶界上不断地析出,吸收了它附近的溶质和空位原子,形成了无析出带,使合金性能降低。断口分析表明,时效后合金的断裂方式均为韧窝断裂和沿晶断裂的混合型,断口中心的硬质粒子是断裂的发源。

关键词(KeyWords)： Al-5Fe基合金;轧制;固溶处理;析出相;断口

Abstract:

Keywords:

基金项目(Foundation): 辽宁省高等学校优秀人才支持计划项目(2008RC36)

作者(Author): 付大军,黄立国

DOI: 10.13289/j.issn.1009-6264.2014.05.014

参考文献(References)：

• [1]Zandergen H W,Andersen S J,Jansen J.Structure de-termination of Mg5Si6particles in Al by dynamic electron diffraction studies[J].Science,1997,277(5330):1221-1221.
• [2]Starink M J,Wang P,Sinclair I,et al.Microstructure and strengthening of Al-Li-Cu-Mg alloys and MMCS:II.Modeling of yield strength[J].Acta Mater,1999,47(14):385-3868.
• [3]Ravi C,Wolverton C.First-principles study of crystal structure and stability of Al-Mg-Si-(Cu)precipitates[J].Acta Materialia,2004,52(4):213-4 227.
• [4]Gupta A K,Lloyd D J,Court S A.Precipitation hardening in Al-Mg-Si alloys with and without excess Si[J].Materials Science&Engineering,2001,316(1):11-17.
• [5]Miao W F,Laughlin D E.Precipitation hardening in alumi-num alloy 6022[J].Scripta Materialia,1999,40(7):873-878.
• [6]Edwards G A,Stiller K,Dunlop G L,et al.The precipitation sequence in Al-Mg-Si alloys[J].Acta Materialia,1998,46(11):3893-3904.
• [7]Gaber A,Gaffar M A,Mostafa M S,et al.Precipitation kinetics of Al-1.12Mg2Si-0.35Si and Al-1.07Mg2Si-0.33Cu alloys[J].Journal of Alloys and Compounds,2007,429(1):167-175.
• [8]李润霞,李荣德,何立子,等.可热处理铸造Al-Si系合金时效行为研究[J].稀有金属材料与工程,2004,33(2):171-175.LI Run-xia,LI Rong-de,HE Li-zi,et al.The heat treatment of casting Al-Si alloy aging behavior research[J].Rare Metal Materials and Engineering,2004,33(2):171-175.
• [9]戴晓元,夏长清,刘昌斌,等.固溶处理及时效对7xxx铝合金组织与性能的影响[J]材料热处理学报,2007,28(4):59-63.DAI Xiao-yuan,XIA Chang-qing,LIU Chang-bin,et al.Effects of solution treatment and aging process on microstructure and mechanical properties of7xxx aluminium alloy[J].Transactions of Materials and Heattreatment,2007,28(4):59-63.

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