THE FRACTURE OF ORDERED (FE,CO)3V

被引：14

作者：

LIU, CT ^{[1
]}

SCHULSON, EM ^{[1
]}

机构：

[1] DARTMOUTH COLL, THAYER SCH ENGN, HANOVER, NH 03755 USA

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1984年 / 15卷 / 04期

关键词：

VANADIUM METALLOGRAPHY - Microstructures;

D O I：

10.1007/BF02644201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Observations have been made of fracture surfaces deformed at low strain rates (3. 3 and 42 multiplied by 10** minus **3s** minus **1) in tension at temperatures from 20 to 1000 degree C, that is, above and below the order/disorder transformation temperature of 950 plus or minus 10 degree C. From 20 to 700 degree C, transgranular fracture occurs via the nucleation, growth, and coalescence of microvoids; high ductilities are obtained (34 to 44 pct). From 700 to 960 degree C, the fracture mode changes from transgranular to intergranular and ductility falls to a minimum of 4 pct. At 1000 degree C a third mode operates consisting of localized dynamic recrystallization followed by boundary sliding of recrystallized grains; ductility rises sharply. The underlying mechanisms are supported through additional experiments performed at higher strain rates.

引用

页码：701 / 706

页数：6