摘要
依据氢进入裂纹尖端区促进局部塑性流动的认识，本文建议并发展了一个氢致脆化区开裂模型．
A model for hydrogen induced embrittling process sone(EPZ)of aching is proposed and developed,based on the notion that hydrogen enters the EPZ ahead of the crack-tip and promotes localized plastic now.Formulae for the threshold stass intensity factor in hydrogen assistal crack growth,KIH,and the relationships between hydrogen environment pressure and KIH are first derived.Both qualitative and quantitative analysis are in agreement with experimental data on superhigh strength steel AISI 4340.
出处
《北京理工大学学报》
EI
CAS
CSCD
1995年第1期55-60,共6页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金
关键词
氢脆
应力强度因子
门楹值
金属材料
开裂
hydrogen embrittlement,plastic flow,stress intensity factor/threshold,embrittling process zone
