邓德伟,刘海英,张林,孙奇,杨树华,宋茂付,郑海彤,张敏

• 1:大连理工大学材料科学与工程学院
• 2:沈阳鼓风机集团股份有限公司研究院
• 3:辽宁省凝固控制与数字化制备技术重点实验室

摘要(Abstract)：

采用OM、TEM和XRD对深层渗碳处理后H13钢的显微组织进行观测,研究了深层渗碳对H13钢显微组织和硬度的影响。结果表明:渗碳后完全退火试样与渗碳后球化退火试样的渗碳层厚度均在3 mm以上,组织细密均匀,硬度提高30%~60%;渗碳后球化退火试样的晶粒更细小,基体上碳化物弥散分布并存在较多的亚结构,且表面硬度稍高于渗碳后完全退火试样。最佳深层渗碳处理工艺为1000℃下固体渗碳4 h,接着进行球化退火(840℃保温4 h,炉冷到740℃再保温4 h,炉冷到500℃后空冷到室温),然后进行1030℃淬火10 min,最后进行560℃回火2次,每次2 h。

关键词(KeyWords)： H13钢;深层渗碳;球化退火;完全退火;碳化物

Abstract:

Keywords:

基金项目(Foundation): 国家“973”项目(2011CB013402);; 辽宁省自然科学基金(2014028002);; 辽宁省科技创新重大专项(201303002);; 辽宁重大装备制造协同创新中心;; 沈鼓-大工重大科研发展基金;; 中央高校基本科研业务费专项资金资助项目

作者(Author): 邓德伟,刘海英,张林,孙奇,杨树华,宋茂付,郑海彤,张敏

DOI: 10.13289/j.issn.1009-6264.2017.03.029

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