摘要
规格为φ127 mm×11.5 mm的20Mn2钢管在热处理时发生断裂现象,对断裂钢管进行宏观观察、成分分析和金相分析。结果表明,钢管在热处理中,加热温度过高或加热时间过长,而过热或过烧是导致钢管断裂的主要原因。
Fracture occured when 20Mn2 steel tube with size φ127 mm× 11.5 mm was heat treated. Macro fracture, chemical composition and microstructure were observed and analyzed. The main reason of fracture during heat treatment was that the tube was over heated or over roasting for the too high temperature or too long time.
出处
《理化检验（物理分册）》
CAS
2007年第7期373-375,378,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
20Mn2钢管
汽车半轴套
断裂
原因分析
过热
过烧
20Mn2 steel tube
Tube for auto semi-draft casing
Fracture
Reason analysis
Over heated
Over masting
