AZ31B镁合金水环境搅拌摩擦焊接研究

稀有金属材料与工程, 2012, 41(6): 1111-1115.

AZ31B镁合金水环境搅拌摩擦焊接研究

王快社 ^1, , 周龙海 ^2, , 武佳蕾 ^3, , 王文 ^4,

1.西安建筑科技大学,陕西西安710055

2.西安建筑科技大学,陕西西安710055

3.西安建筑科技大学,陕西西安710055

4.西安建筑科技大学,陕西西安710055

基金项目: 国家自然科学基金(50774059) 教育部高等学校博士学科点科研基金(20096120110012) 西北工业大学凝固技术国家重点实验室开放课题(SKLSP201009)

关键词： AZ31B镁合金 , 水环境搅拌摩擦焊接 , 微观组织 , 力学性能

Research of Submerged Friction Stir Welded AZ31B Magnesium Alloy

对比研究了AZ31B镁合金空气环境搅拌摩擦焊接(Friction Stir Welding,FSW)和水环境搅拌摩擦焊接(Submerged Friction Stir Welding,SFSW)接头的微观组织与力学性能.结果表明:SFSW接头焊核区为细小等轴状再结晶晶粒.随着焊接速度的增大,焊核区晶粒尺寸增大,显微硬度值降低.FSW接头表层处的显微组织比中心处粗大,且分布不均匀；而SFSW接头表层处的显微组织比中心处明显细小.FSW接头的表层硬度值低于中心处的硬度;而SFSW接头的表层硬度值高于中心处的硬度.当旋转速度为950 r·min-1、焊接速度为75 mm·min-1时,SFSW接头的抗拉强度值达到最大,为母材强度的72％,拉伸断口表现为解理断裂特征.

参考文献

[1]	Mishra R S;Ma Z Y .[J].Materials Science and Engineering R:Reports,2005,50:1.
[2]	Wang Xunhong;Wang Kuaishe .Microstructure and properties of friction stir butt-welded AZ31 magnesium alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):114-117.
[3]	Afrin, N;Chen, DL;Cao, X;Jahazi, M .Microstructure and tensile properties of friction stir welded AZ31B magnesium alloy[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):179-186.
[4]	Chowdhury, S.M.;Chen, D.L.;Bhole, S.D.;Cao, X. .Tensile properties of a friction stir welded magnesium alloy: Effect of pin tool thread orientation and weld pitch[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2010(21/22):6064-6075.
[5]	Wang YN;Chang CI;Lee CJ;Lin HK;Huang JC .Texture and weak grain size dependence in friction stir processed Mg-Al-Zn alloy[J].Scripta materialia,2006(7):637-640.
[6]	Seung Hwan C. Park;Yutaka S. Sato;Hiroyuki Kokawa .Effect of micro-texture on fracture location in friction stir weld of Mg alloy AZ61 during tensile test[J].Scripta materialia,2003(2):161-166.
[7]	Padmanaban G;Balasubramanian V .[J].Materials & Design,2009,30:2647.
[8]	Woo W;Choo H;Prime M B et al.[J].Acta Materialia,2008,56:1701.
[9]	Commin L;Dumont M;Masse J E et al.[J].Acta Materialia,2009,57:326.
[10]	张华,郭力杰,林三宝,吴林,冯吉才.镁合金AZ31搅拌摩擦焊塑性流体流动[J].焊接学报,2004(04):67-69.
[11]	Pareek M;Polar A;Rumiche F.Proceedings of the Seventh International Conference on Trends in Welding Research[M].Pine Mountain,GA:ASM International,2006:421.
[12]	Fatemi-Varzaneh S M;Zarei-Hanzaki A;Beladi H .[J].Materials Science and Engineering A,2007,456:52.
[13]	Aydin M;Bulut R .[J].KOVOVE MATERIALY-METALLIC MATERIALS,2010,48:97.
[14]	SEUNG HWAN C. PARK;YUTAKA S. SATO;HIROYUKI KOKAWA .Basal Plane Texture and Flow Pattern in Friction Stir Weld of a Magnesium Alloy[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2003(4):987-994.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网