电焊机2018，Vol.48Issue(3)：109-114,6.DOI:10.7512/j.issn.1001-2303.2018.03.19
6005A-T6铝合金高速搅拌摩擦焊接头微观组织和力学性能
Microstructure and mechanical properties of 6005A-T6 aluminum alloy joint by high speed friction stir welding
薛海峰 1陈姝君 1火巧英 1吉华 2李文晓 2郭伟强 2徐红勇 2吴廷光 2王晓涛2
作者信息
- 1. 中车南京浦镇车辆有限公司,江苏南京210031
- 2. 航天工程装备(苏州)有限公司,江苏苏州215100
- 折叠
摘要
Abstract
In this paper,6005A-T5 aluminum alloy plate was friction stir welded using a high welding speed.The microstructure evolution of different zones of the joint were investigated using various characterization methods.Mechanical properties of the joint were evaluated through tensile tests and micro-hardness measurements.It was shown that the nugget zone had fine equiaxed grains due to the dynamic recrystallization.The thermo-mechanically affected zone was characterized by plastic deformed and recovered structure because of the stains and thermal cycle subjected during the FSW process.The heat affected zone retained the same grain structure as the parent material,but grain coarsening occurred,which was also attributed to the thermal cycle during welding.The tensile strength of the joint reached 82.5％ of the base material,and all the tensile specimens were fractured at heat affected zone,which was confirmed as softening region by microhardness measurement.In the condition of 106 cycles,fatigue limit at 132.9 MPa.The presented data of fatigue test provides solid base for pratical application.关键词
高速搅拌摩擦焊/6005A-T6铝合金/显微组织/力学性能Key words
high speed friction stir welding/6005A-T6 aluminum alloy/joint microstructures/mechanical property分类
矿业与冶金引用本文复制引用
薛海峰,陈姝君,火巧英,吉华,李文晓,郭伟强,徐红勇,吴廷光,王晓涛..6005A-T6铝合金高速搅拌摩擦焊接头微观组织和力学性能[J].电焊机,2018,48(3):109-114,6.
