Fracture reason of a liner parts
摘 要
采用宏观观察、金相检验、扫描电镜分析、硬度测试等方法对某衬筒零件断裂原因进行分析。结果表明:衬筒端头经过局部淬火处理后,其显微组织变为异常粗大的马氏体,硬度增大且脆性增加;在使用过程中衬筒受到摩擦和挤压的作用,当压力达到一定程度时,衬筒发生脆性断裂。
Abstract
The causes of a liner parts fracture were analyzed by means of macroscopic observation, metallographic examination, scanning electron microscope analysis and hardness test. The results show that after local quenching treatment, the microstructure of the liner end became abnormal coarse martensite, the hardness increased and the brittleness increased. The liner was subjected to friction and extrusion during use, and brittle fracture occured when the pressure reached a certain degree.
中图分类号 TB31 TG115.2 DOI 10.11973/lhjy-wl202302014
所属栏目 质量控制与失效分析
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收稿日期 2022/4/18
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备注范语萱(1987-),女,本科,高级工程师,主要从事金属材料检测及研究工作,784921504@qq.com
引用该论文: FAN Yuxuan,LI Bo. Fracture reason of a liner parts[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2023, 59(2): 51~53
范语萱,李波. 某衬筒零件断裂原因[J]. 理化检验-物理分册, 2023, 59(2): 51~53
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参考文献
【1】张栋.失效分析[M].北京:国防工业出版社,2004.
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