45Si2Cr预应力混凝土钢筋断裂分析  

Fracture analysis on pre-stress concrete ribbed bar of 45Si2Cr steel

作　　者：赵文成[1] 王淑平[1] 乔艳萍[1] 郭健[2] 

机构地区：[1]唐山科技职业技术学院冶金系,河北唐山063001 [2]唐山钢铁股份有限公司技术中心,河北唐山063016

出　　处：《金属热处理》2009年第10期92-93,共2页Heat Treatment of Metals

摘　　要：对断裂失效的45S i2Cr预应力混凝土钢筋的拉伸断口、化学成分、夹杂物、热处理工艺和显微组织进行分析。结果表明,断口呈脆性断裂特征,断裂的主要原因是热处理工艺不当,另外S含量偏高及钢筋表面存在裂纹也会引起断裂失效。提出预防措施。The macrostructure of the tensile fracture, chemical composition, inclusions, heat treatment and microstructure of cracking failure pre-stress concrete ribbed bar of 45Si2Cr steel were analyzed. The results show that the fracture presents brittle characteristic and the main reason of failure is improper heat treatment. The high S content and surface cracks can lead to failure as well. Some measures to avoid the eraeking are proposed.

关 键 词：混凝土钢筋 断裂 热处理 回火索氏体 

分 类 号：TG157[金属学及工艺—热处理]