Effects of grain-boundary sliding and plastic deformation of grains on the formation of grain-boundary cracks in a double cylindrical bicrystal of a CU-SiO2 alloy

被引：0
|
作者：
Seki, Masakazu [1 ]
Fujimoto, Mitsuru
Fujii, Toshiyuki
Kato, Masaharu
Onaka, Susumu
机构：
[1] Tokyo Inst Technol, Dept Innovat & Engn Mat, Yokohama, Kanagawa 2268502, Japan
[2] Tokyo Inst Technol, Dept Mat Sci & Engn, Yokohama, Kanagawa 2268502, Japan
来源：
MATERIALS TRANSACTIONS | 2007年 / 48卷 / 06期
关键词：
grain boundaries; fracture; high temperature deformation; copper alloys;
D O I：
10.2320/matertrans.MRA2007027
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A double cylindrical bicrystal is a bicrystal consisting of a cylindrical inside grain with a second g-rain wrapped around its curved side surface. Using a double cylindrical bicrystal of a Cu-SiO2 alloy, tensile tests were performed at 800 K under 2 x 10(-4) S-1. Three specimens cut from the same bicrystal were deformed to three different strains. Preferential formation of grain-boundary cracks around the cylindrical inside grain was observed after the tensile tests. In addition to the Occurrence of grain-boundary sliding, the misfit of slip deformation at the grain boundary affects the formation of the grain-boundary cracks.
引用
收藏
页码：1412 / 1416
页数：5
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