晶界特征分布对沉淀行为的影响:304 钢和 T91 钢的比较研究

Hongjun Li, Yu Zhou, Lin Hong, Ming Huang, Sen Yang
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引用次数: 0

摘要

当 304 钢和 T91 钢用作高温结构材料时,富含 Cr 的 M23C6 碳化物的存在会严重影响其性能。对于 304 钢,抑制碳化物析出的方法是增加 Σ3 晶界(GB)的比例。相反,对于 T91 钢,再结晶后随机 GB 的比例会增加。因此,碳化物在铁素体晶粒内而不是在马氏体边界析出。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of Grain Boundary Character Distribution on the Precipitation Behavior: A Comparative Study for 304 Steel and T91 Steel

Effect of Grain Boundary Character Distribution on the Precipitation Behavior: A Comparative Study for 304 Steel and T91 Steel

When 304 steel and T91 steel are used as high-temperature structural materials, the presence of Cr-rich M23C6 carbides significantly impacts their properties. In the case of 304 steel, the inhibition of carbide precipitation is achieved by increasing the proportion of Σ3 grain boundaries (GBs). Conversely, for T91 steel, the proportion of random GBs increases following recrystallization. As a result, carbides precipitate within the ferrite grains instead of at the martensitic boundaries.

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