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OALib Journal期刊
ISSN: 2333-9721
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一种scwr包壳管用9--12\%cr低活性f/m钢的组织及析出相研究
Keywords: 金属材料,？铁素体/马氏体钢,热处理,？？显微组织,碳化物
Abstract:
？运用thermo--calc软件进行热力学计算,预测了一种新型9--12%cr低活性f/m(铁素体/马氏体)实验钢的组织。对淬火回火热处理后的显微组织进行了观察,并对析出物进行电子衍射结构分析和eds化学成分检测。结果表明,实验钢是典型的回火板条马氏体组织,位于各种晶界上的析出物均为富cr的碳化物m23c6,其化学成分随碳化物的形貌变化而变化。对实验钢进行60%冷变形并随后在820℃退火10--300min,m23c6在完全再结晶、奥氏体相变过程中进一步球化,cr、w不断富集,cr/fe逐渐升高至2后成分趋于稳定,化学组成接近于(cr15fe6w2)c6。
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