摘要
对淬火开裂的S45C钢零件进行了化学成分、金相组织、断口分析及硬度检测。结果表明,原材料局部夹杂物偏析较重,晶粒粗大,带状组织和Sn、Sb、As有害元素的存在及P含量较高是导致开裂的主要原因,采用亚温淬火可防止零件的开裂。
The chemical composition, microstructure,fracture morphology and hardness of cracked S45C steel parts were tested and analyzed. The results show that the main reasons for causing the quench cracking are coarse grain size, excessive inclusion, banded structure of raw materials, some harmful elements such as Sn, Sb, As as well as excessive P, and intercritical hardening can prevent the parts from quench cracking.
出处
《金属热处理》
EI
CAS
CSCD
北大核心
2007年第4期92-94,共3页
Heat Treatment of Metals
关键词
S45C钢
淬火开裂
亚温淬火
S45C steel
quench cracking
intercritical hardening
