摘要
为降低成本、增强减重,以实现节能降耗的目标,提高工程机械、汽车用钢等的强度级别成为一个有效的途径。然而,随着钢材强度的提高,其延迟断裂敏感性也随之增大,氢致延迟断裂敏感性已成为阻碍高强钢广泛应用的一个关键因素。系统阐述了国内外高强钢氢致延迟断裂行为的研究进展,讨论了相关影响因素,以及现有的相关基础理论及其局限性,并总结了延迟断裂行为研究方法进展,为相关领域的研究人员提供参考。
To meet the demands of lightening weight,fuel economy improvement and cost reduction,high strength steel is developed in construction machinery and automotive industries.However,as the strength of steels increases,the delayed fracture susceptibility increase,too. As one of the main failure forms,hydrogen induced delayed fracture becomes an obstacle for the wide application of high strength steels. To provide reference points for the related researchers,the research progresses,the influence factors,the related theories and their limitations（ the hydrogen recombination model,the decohesion models,and hydrogen-enhanced localized plasticity theory）,and the progresses in research methods（ Constant-load and Constant-strain methods,Slow strain rate test,Fracture mechanics methods,and Drawn cup tests） of hydrogen induced delayed fracture of high strength steels are discussed.
出处
《宝钢技术》
CAS
2015年第3期11-16,共6页
Baosteel Technology
关键词
高强钢
氢
延迟断裂
high strength steel
hydrogen
delayed fracture
