Effects of friction stir welding on microstructure of 7075 aluminum

被引：756

作者：

Rhodes, CG

Mahoney, MW

Bingel, WH

Spurling, RA

Bampton, CC

机构：

[1] Rockwell Science Center, Thousand Oaks

来源：

SCRIPTA MATERIALIA | 1997年 / 36卷 / 01期

关键词：

D O I：

10.1016/S1359-6462(96)00344-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

7075 Al plate has been successfully joined by friction stir techniques. Unlike fusion welding, this is a solid-state process with no evidence of melting. The weld is characterized by a recrystallized nugget having a 2-4 μm grain size. The dislocation density in the nugget is lowered from that in the parent metal; strengthening precipitates appear to have been solutionized during the welding process, with the larger ones re-precipitating on cooling. The process, thus, provides a method for joining an unweldable aluminum alloy without introducing a cast microstructure.

引用

页码：69 / 75

页数：7

共 11 条

[1] [Anonymous], 1983, METALS HDB, V6, P373
[2] BROWN RH, 1967, ALUMINUM, V1, P31
[3] Dawes CJ, 1996, WELD J, V75, P41
[4] Dawes CJ, 1995, TWI Bulletin, P124
[5] Ellis M., 1995, TWI B, V6, P138
[6] Lorimer G., 1978, PRECIPITATION ALUMIN, P87
[7] MAHONEY MW, IN PRESS SCRIPT MET
[8] Thomas W. M., 1991, GB Patent, Patent No. [9125978.8, 91259788]
[9] Thomas W.M., 1991, U.S. Patent Application, Patent No. [5,460,317, 5460317]
[10] Thomas WM, 1991, International Patent Application, Patent No. [PCT/GB92/02203, 02203]

← 1 2 →