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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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中碳NiCrMo钢过热断口的形态观察
, PP. 439-572
Abstract:
利用扫描电镜研究了中碳NiCrMo钢过热断口(石状断口)的微观形态。观察结果表明,过热的石状断口为沿晶塑坑断裂。过热断口上的MnS夹杂的形态及大小变化很大,在同一个石状颗粒的各个表面上可以表现大不相同。在断口上有时直接观察到MnS夹杂的魏氏析出特征,即硫化物夹杂以极为弥散的形式均匀地析出在高温奥氏体的{100}晶面上。对各种形态的硫化物夹杂可能的形成原因及其控制因素进行了讨论。
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