摘要
00Cr14Ni14Si4钢的锻造裂纹与钢中Al,S以及由之形成的氧化物和硫化物含量过高有关。钢在模铸凝固和冷却过程中形成夹杂物偏析,呈点链状的氧化物和晶界析出的薄片Y相在热加工时弱化了晶界,降低了钢的导热性和高温塑性,从而在夹杂物偏析区显示出宏观的热加工裂纹。
Forging cracks in C4 steel are related to the excessive content of Al, S and the oxides and sulphides formed by them. In hot working, grain boundaries were weakened by the inclusion segregation formed during solidification and cooling of ingot. Point-chain shaped oxides and thin plates of Y phase deteriorated heat conductivity and hight temperature plasticity of the steel. There for, macroscopic hot forging cracks appeared in the area of inclusion segregation.
出处
《理化检验（物理分册）》
CAS
1997年第11期3-5,8,共4页
Physical Testing and Chemical Analysis(Part A:Physical Testing)
关键词
微量
铝
硫
偏析
奥氏体
不锈钢
锻造裂纹
Oxides, Sulphides, Segregation, Precipitation at grain boundary
