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汽车紧固件用SCM440球化退火工艺研究

WANG Yang,ZHOU Lv,DENG Wei, ZHANG Yi-wei

Heat Treatment Technology and Equipment（2023）

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Abstract
本文基于JMatPro软件模拟SCM440的连续冷却曲线,采用金相显微镜和硬度计分析不同热轧态组织和球化退火工艺对SCM440球化效果的影响.结果表明,采用两相区+亚温区球化退火工艺的球化效果要明显优于亚温区球化退火工艺;与铁素体+珠光体型热轧态组织相比,贝氏体型热轧态组织可达到更好的球化效果.
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