Tensile Properties and Fusion Zone Hardening for GMAW and MIEA Welds of a 7075-T651 Aluminum Alloy

查看全文 作　　者：[1,2,3]N.Alatorre;[1]R.R.Ambriz;[2,3]B.Noureddine;[4]A.Amrouche;[5]A.Talha;[1]D.Jaramillo

机构地区：[1]Instituto Politcnico Nacional CIITEC-IPN,Cerrada de Cecati S/N Col.Sta.Catarina,C.P 02250 Azcapotzalco,DF,Mexico;[2]Universit Lille Nord de France,59000 Lille,France;[3]Universit Lille 1,LML,59650 Villeneuve d’Ascq,France;[4]Laboratoire de Gnie Civil et ge'o-Environnement LGCgE,EA 4515,Facult des Sciences Appliques FSA Bthune,Universit d’Artois,Arras,France;[5]Ecole des Hautes Etudes d’Ingnieur (HEI),13 rue de Toul,59046 Lille,France

出　　处：《Acta Metallurgica Sinica(English Letters)》索引2014年第27卷第4期,共11页

基　　金：CONACyT (project CB177834) 摘　　要：Tensile and hardness values for 7075-T651 aluminum alloy in the as welded and post weld heat treated conditions(solubilization and artificial aging-T6),obtained using GMAW and modified indirect electric arc(MIEA)welding processes are presented.Results showed that the base material along rolling direction exhibited a tensile strength of around 600 MPa and elongation of 11%.For the as welded condition,tensile strength was 260 MPa and elongation percent of 3%.This behavior was attributed to brittleness induced by the microstructural characteristics of the welded alloys,as well as high porosity.Hardness profiles along the welds were obtained and different welded zones were identified.A soft zone(*100 HV0.1) in the heat affected zone for GMAW and MIEA was observed,the minimum hardness corresponding to weld metal(*85 and *96 HV0.1for GMAW and MIEA,respectively).The high dilution between filler and base metal during welding in MIEA allows to the Zn and Cu to flow from the base metal into the weld metal,inducing hardening by solution and subsequent artificial aging.In this regard,the hardness of the weld metal for MIEA increases by 56%,while the tensile strength reaches a value close to 400 MPa.For GMAW,non-favorable hardening effect was observed for the weld metal after solution and artificial aging. 关键词：气体保护焊焊接工艺铝合金拉伸性能硬度分布焊接金属淬火拉伸强度

相关文献

参考文献（21）
引证文献（5）
耦合文献（0）

参考文献(21)

引证文献(5)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Tensile Properties and Fusion Zone Hardening for GMAW and MIEA Welds of a 7075-T651 Aluminum Alloy

参考文献(21)

引证文献(5)

用户提示