摘要
3Cr13不锈钢模具在淬回火后发生了断裂失效。采用直读光谱仪、金相显微镜、显微硬度计、体视显微镜和扫描电镜等检测方法,对3Cr13不锈钢模具的材料成分、非金属夹杂物、显微组织、显微硬度和断口形貌等项目进行了检验分析。结果表明,钢中存在较多非金属夹杂物和严重的网状碳化物,组织不均匀使得淬火组织应力过大,从而导致了模具的开裂。
Fracture failure happened on a 3Cr13 stainless steel mold after quenching and tempering. Chemical composition,non-metallic inclusions,microstructure,hardness and fracture morphology of the failed 3Cr13 stainless steel mold were inspected and analyzed by means of direct reading spectrometer,metallographic microscope,Rockwell hardness tester,stereomicroscope and scanning electron microscopy.The results show that there are more non-metallic inclusions and serious network carbides existing in the steel. The excessive quenching and transformation stress brought by uneven microstructure results in cracking of the mold.
出处
《金属热处理》
CAS
CSCD
北大核心
2015年第5期193-195,共3页
Heat Treatment of Metals
基金
浙江省科技计划项目(2013C31089)
浙江省科技厅公益技术研究工业项目(2013C1117)
