| H13钢中的碳化物分析及其演变规律研究 |
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| 引用本文： | 宋雯雯,闵永安,吴晓春.H13钢中的碳化物分析及其演变规律研究[J].材料热处理学报,2009,30(5). |
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| 作者姓名： | 宋雯雯 闵永安 吴晓春 |
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| 作者单位： | 上海大学材料科学与工程学院,上海,200072 |
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| 基金项目： | 上海市重点学科建设项目(70101);;上海市科委登山项目(065211028) |
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| 摘 要： | 通过OM、SEM及TEM分析了H13钢在电渣锭退火、锻后退火及淬回火过程中的显微组织变化,利用电解法萃取H13钢在三种状态下的碳化物,通过XRD对其进行物相分析,并与JMatPro热力学相图计算结果进行比较。研究表明:H13钢电渣锭中的伪共晶碳化物主要为V8C7与Fe3Mo3C;在锻造加热过程中,Fe3Mo3C溶于基体,并在锻后退火和淬回火的过程中重新从基体中析出,大部分V8C7溶于基体,少量未溶颗粒保留于锻后退火组织及淬回火组织中;淬回火过程中大量析出以V8C7、Mo2C为主的二次硬化型碳化物,上述结果与JMatPro计算结果基本符合。
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| 关 键 词： | H13钢 伪共晶碳化物 二次硬化 |
Study on carbides and their evolution in H13 hot work steel |
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| SONG Wen-wen,MIN Yong-an,WU Xiao-chun.Study on carbides and their evolution in H13 hot work steel[J].Transactions of Materials and Heat Treatment,2009,30(5). |
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| Authors: | SONG Wen-wen MIN Yong-an WU Xiao-chun |
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| Affiliation: | School of Materials Science and Engineering;Shanghai University;Shanghai 200072;China |
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| Abstract: | Carbides and microstructure in H13 steel under three different states(i.e.annealed electroslag remelt(ESR) ingot,annealing and tempering)were studied by means of OM,SEM and EDS.The carbides are extracted by electrolysis process and analyzed by XRD and TEM.The results show that pseudo-eutectic carbides are mainly V_8C_7 and Fe_3Mo_3C in annealed H13 ESR ingot.All of Fe_3Mo_3C carbides dissolve into austenitic matrix,while V_8C_7 carbides partly dissolve during the reheating of the ESR ingot for hot forging.S... |
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| Keywords: | H13 steel pseudo-eutectic carbide secondary hardening |
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