Tool design and stir zone grain size in AZ31 friction stir spot welds

被引：25
作者：
Sun, N. [1 ]
Yin, Y. H. [2 ]
Gerlich, A. P. [3 ]
North, T. H. [4 ]
机构：
[1] Jilin Univ, Minist Educ, Key Lab Automobile Mat, Changchun 130025, Jilin, Peoples R China
[2] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China
[3] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2V4, Canada
[4] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada
来源：
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2009年 / 14卷 / 08期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Friction stir spot welding; Tool geometry; Tool rotational speed; Grain size; AZ31; STATIC STRENGTH; MAGNESIUM ALLOY; MICROSTRUCTURE; GROWTH; GEOMETRY;
D O I：
10.1179/136217109X12518083193559
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of tool design and tool rotational speed variations on the torque, energy output, stir zone temperature and average grain size in the stir zones of AZ31 friction stir spot welds was investigated. The average stir zone grain size decreased by similar to 1 mm in AZ31 friction stir spot welds made using a three-flat/threaded tool design and tool rotational speeds of 2250 and 3000 rev min(-1). However, there was no statistically significant influence of tool design on the average grain sizes in friction stir spot welds made using tool rotational speeds of 1500 and 1000 rev min(-1). There was no evidence of grain growth in the stir zones of AZ31 friction stir spot welds. Similar torque, calculated energy output and stir zone temperature values were found in AZ31 friction stir spot welds made using threaded and three-flat threaded tool designs and tool rotational speeds from 1000 to 3000 rev min(-1).
引用
收藏
页码：747 / 752
页数：6
相关论文
共 34 条
[1]   Experimental study of joint performance in spot friction welding of 6111-T4 aluminium alloy [J].
Arul, S. G. ;
Miller, S. F. ;
Kruger, G. H. ;
Pan, T. -Y. ;
Mallick, P. K. ;
Shih, A. J. .
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2008, 13 (07) :629-637
[2]   Effect of tool geometry on static strength of friction stir spot-welded aluminum alloy [J].
Badarinarayan, H. ;
Yang, Q. ;
Zhua, S. .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2009, 49 (02) :142-148
[3]  
BLAIR RC, 1992, STAT MED, V11, P491, DOI 10.1002/sim.4780110410
[4]  
BLUNDELL N, SP2034 SAE
[5]   CFD modelling of friction stir welding of thick plate 7449 aluminium alloy [J].
Colegrove, P. A. ;
Shercliff, H. R. .
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2006, 11 (04) :429-441
[6]   Recrystallization in AZ31 magnesium alloy during hot deformation [J].
Essadiqi, E ;
Liu, WJ ;
Kao, V ;
Yue, S ;
Verma, R .
PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5, 2005, 475-479 :559-562
[7]  
FREENEY T, SP2034 SAE
[8]  
Frost F.D., 1982, DEFORMATION MECH MAP
[9]   Strain rates and grain growth in Al 5754 and Al 6061 friction stir spot welds [J].
Gerlich, A. ;
Yamamoto, M. ;
North, T. H. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2007, 38A (06) :1291-1302
[10]   Stir zone microstructure and strain rate during Al 7075-T6 friction stir spot welding [J].
Gerlich, A. ;
Avramovic-Cingara, G. ;
North, T. H. .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2006, 37A (09) :2773-2786
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