Improvement　of　K_(IC)　and　ΔK_(th)　for　Steel　GCr15　by　SL　Technology

作     者：Yang YulinYanshan University, Qinhuangdao (066004), China, Huang QingHarbin Heavy Machinery Factory, Harbin (150014), China 

作者机构：Yanshan Univ Qinhuangdao 006004 Peoples R China Harbin Heavy Machinery Factory Harbin 150014 Peoples R China 

出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)

年 卷 期：1997年第4卷第1期

页      面：42-45页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：ladle injection bearing steel fracture toughness 

摘      要：The inclusion of steel GCr15 using SL and CAB technologies has been investigated and determined with SEM and optical microscope. The K IC and Δ K th of steel GCr15 were measured with the method of fracture mechanics. Experimental results show that the volume fraction of inclusion and the large particle inclusion can be reduced by using SL technology. Both values of K IC and Δ K th with SL technology were higher than those with CAB technology to some extent. It is feasible to measure Δ K th of steel GCr15 with lift drop method for multiple specimens.