锻钢件中常见冶金缺陷造成的淬火开裂  

Quenching crack caused by common metallurgical defects in forged steel parts

作　　者：李平平 李玉新 徐燕 吴飞虎 梁雪冬 王群 刘德华 LI Pingping;LI Yuxin;XU Yan;WU Feihu;LIANG Xuedong;WANG Qun;LIU Dehua(CRRC Qishuyan Institute Co.,Ltd.,Changzhou 213011,China;Jiang’an Locomotive Depot of China Railway Wuhan Bureau Group Co.,Ltd.,Wuhan 430301,China)

机构地区：[1]中车戚墅堰机车车辆工艺研究所有限公司,常州213011 [2]中国铁路武汉局集团有限公司江岸机务段,武汉430301

出　　处：《理化检验（物理分册）》2023年第6期1-6,共6页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：较为全面且深入地阐述了含有内生夹杂物、表面夹渣、带状偏析的3种锻钢件中常见冶金缺陷造成的淬火开裂。对产品的制造工艺、裂纹形貌、显微组织等进行分析。结果表明:影响淬火开裂的因素为淬火应力、应力集中、冶金缺陷等,尤其与夹杂物类缺陷的分布位置关系很大。Quenching crack caused by common metallurgical defects in three kinds of forged steel parts containing indigenous inclusion,surface slag and banded segregation was described comprehensively and deeply.The product manufacturing process,crack morphology and microstructure were analyzed.The results show that the factors affecting quenching crack were quenching stress,stress concentration,metallurgical defects,etc.,especially the distribution position of inclusion defects was closely related.

关 键 词：夹杂物 表面夹渣 带状偏析 应力集中 淬火裂纹 

分 类 号：TH133.2[机械工程—机械制造及自动化] TB31[一般工业技术—材料科学与工程]