INTERGRANULAR FRACTURE OF AL-LI ALLOYS - EFFECTS OF AGING AND IMPURITIES

被引：18

作者：

LEWANDOWSKI, JJ ^{[1
]}

HOLROYD, NJH ^{[1
]}

机构：

[1] ALCAN INT LTD,BANBURY OX16 7SP,OXON,ENGLAND

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1990年 / 123卷 / 02期

关键词：

D O I：

10.1016/0921-5093(90)90287-D

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Experiments have been conducted on AlLi-based alloys to determine the factors promoting low ductility intergranular fracture. High resolution scanning Auger microscopy (SAM) and laser microprobe mass spectroscopy (LMMS) were performed on fracture surfaces for alloys in various heat treatments and tested at either -196 °C or room temperature. Low ductility intergranular fracture is not primarily due to the intergranular segregation of trace impurity elements such as sodium, potassium, calcium or elemental lithium although the latter was always detected on intergranular fracture surfaces by both SAM and LMMS. The possibility of LiH-induced low ductility intergranular fracture is discussed. © 1990.

引用

页码：219 / 227

页数：9

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