摘要
选取退火４５钢为研究对象，考察冲击接触载荷下亚表层微观形变特征与损伤结果表明，冲击接触载荷下，铁素体的变形以多沿移为特征；滑移在品界受阻产生应力集中并产生力偶使晶粒发生相对转动，从而在品界产生裂纹；
An examination of characteristics of micro-deformation and damage of mild carbon steel was conducted under impact contact load by SEM. The following results were obtained: (1) The characteristics of ferrite deformation under impact contact load is multi-slip; (2) Grain rotation which produces crack on the grain boundary was caused by force couple because slip is obstructed and stress concentrated on the grain boundary; (3) Sub-grain boundaries and sub-grains are the result of intersecting of different slip systems in different area within a ferrite grain.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第8期809-812,共4页
Acta Metallurgica Sinica
基金
国家自然科学基金资助项目!59771048
