22MnB5热冲压淬火零件的耐腐蚀性能
Corrosion Resistance of 22MnB5 Hot-Stamped and Quenched Parts
摘 要
根据汽车用22MnB5零件的制造工艺，对无涂层板、Al-Si涂层板、热镀锌板进行热冲压淬火处理及无涂层板热冲压淬火后电镀锌处理。利用光学显微镜观察了热冲压淬火前后零件涂层的形貌变化。通过中性盐雾试验研究了不同工艺处理零件的耐腐蚀性能。结果表明：对热压冲淬火后零件进行电镀锌处理，得到的涂层致密均匀没有破损，且具有极好的阴极保护效果，该零件的耐腐蚀性能远优于Al-Si涂层板、热镀锌板和无涂层板的；热压冲淬火后电镀锌处理可以提高汽车零件的耐腐蚀性能。
腐蚀
热镀锌板
Al-Si涂层板
电镀锌
hot-stamping and quenching
corrosion
hot galvanized steel sheet
Al-Si plating sheet
galvanization
Abstract
According to the manufacturing process of 22MnB5 parts for automobiles, uncoated steel sheet, Al-Si coated steel sheet and hot galvanized steel sheet were treated by hot-stamping and quenching, and the uncoated steel sheet was galvanized after hot-stamping and quenching. The changes in the morphology of the part coating before and after hot-stamping and quenching were observed by optical microscope. The corrosion resistance of parts treated by different processes was studied by neutral salt-spray test. The coating obtained by galvanization after hot-stamping and quenching on a part was dense and uniform without damage, and had excellent cathodic protection effect. The corrosion resistance of the part was far superior to that of Al-Si coated steel sheet, hot galvanized steel sheet and uncoated plate. Galvanization after hot-stamping and quenching can improve the corrosion resistance of automobile parts.
中图分类号 TG DOI 10.11973/fsyfh-202111009
所属栏目 试验研究
基金项目
收稿日期 2019/2/20
修改稿日期
网络出版日期
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引用该论文: CHEN Hanjie,AN Jian,LI Dongcheng. Corrosion Resistance of 22MnB5 Hot-Stamped and Quenched Parts[J]. Corrosion & Protection, 2021, 42(11): 61
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参考文献
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【10】张杰. 超高强度热成形钢镀层组织和性能研究[D]. 沈阳:东北大学, 2014:114-115.
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