Embrittlement phenomena in the HAZ of Al-Zn-Mg weldments

被引：3

作者：

Bjorneklett, B ^{[1
]}

Grong, O ^{[1
]}

Kluken, AO ^{[1
]}

Jensrud, O ^{[1
]}

机构：

[1] RAUFOSS HYDRO AUTOMOT RES CTR,N-2831 RAUFOSS,NORWAY

来源：

ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3 | 1996年 / 217卷

关键词：

Al-Zn-Mg alloys; welding; microstructure; white zone; local melting; mechanical properties;

D O I：

10.4028/www.scientific.net/MSF.217-222.1527

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present investigation four different aluminium flat bar extrusions within the AA7000 series have been subjected to GMA welding. The weldments were subsequently evaluated by means of metallography and tensile testing. The metallographic investigation revealed large differences in particle size and distribution at the grain boundaries adjacent to the fusion line. Evidence of local melting in the HAZ was found in one of the alloys containing copper which, in turn, caused HAZ embrittlement. This was verified by Charpy V-notch testing.

引用

页码：1527 / 1532

页数：6

共 9 条

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