- 中国核心期刊（遴选）数据库收录期刊
- 中国科技论文统计源期刊
- 中国学术期刊综合评价数据库来源期刊
| Citation: |
YANG Yongqiang, MA Xiaojian, WANG Peng, LIU Luqian, ZHENG Chunlei. Failure Reason and Protection Countermeasures on Liquid Metal Induced Embrittlement of 770 MPa Grade Quenched and Tempered Steel Casting[J]. Corrosion & Protection, 2024, 45(4): 54-58. DOI: 10.11973/fsyfh-202404009
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The causes of cracks in a large cross-section cast steel workpiece were analyzed using metallographic microscopy, electron scanning microscopy, and other methods. The results show that during the hot-dip galvanizing process of high-strength quenched and tempered cast steel, cracks perpendicular to the surface were generated in the matrix, with a crack length of about 3 mm, and the cracks cracked along the grain. The energy spectrum results indicated that the cracks contained a large amount of zinc, which was a typical liquid metal embrittlement phenomenon. In response to this situation, protective measures were proposed to avoid liquid metal embrittlement through hot-dip galvanizing process, welding process, forming process, coating system and other aspects.
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