Dissociation of Cr-rich M23C6 carbide in Alloy 617 by severe plastic deformation
Dissociation of Cr-rich M23C6 carbide in Alloy 617 by severe plastic deformation
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DOI：
10.1016/j.jnucmat.2010.09.027
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发表时间：
2010-11
影响因子：
3.1
通讯作者：
T. Jo;Jeong Hun Lim;Y. Kim
中科院分区：
文献类型：
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作者：
T. Jo;Jeong Hun Lim;Y. Kim
在本研究中，使用 50% 冷轧研究了合金 617 中富铬 M23C6 碳化物的解离。合金617中的主要碳化物主要由M23C6碳化物和少量M6C碳化物组成。碳化物的晶格参数测定为1.070nm(M23C6)和1.121nm(M6C)。 50%冷轧后，合金617中总碳化物的面积分数从3.50%下降到1.66%。 M23C6碳化物被剧烈塑性变形过程中产生的位错中的碳陷阱解离。或者，在M23C6碳化物解离过程中，M6C碳化物的面积分数从0.06%增加到0.37%。 M6C碳化物的面积分数增加是由于M23C6碳化物解离过程中化学成分（例如Cr和Mo）的相对变化而形成M6C碳化物。
In this study, the dissociation of Cr-rich M23C6carbides in Alloy 617 was investigated using 50% cold rolling. The major carbides in Alloy 617 consisted primarily of M23C6carbide and a small amount of M6C carbide. The lattice parameters of the carbides were determined as 1.070nm (M23C6) and 1.121nm (M6C). The area fraction of the total carbides in Alloy 617 decreased from 3.50% to 1.66% after 50% cold rolling. The M23C6carbide was dissociated by the carbon traps in dislocations generated during the severe plastic deformation. Alternatively, the area fraction of M6C carbide increased from 0.06% to 0.37% during the dissociation of M23C6carbide. The area fraction of M6C carbide increased due to the formation of M6C carbide as a result of the relative changes in chemical composition, such as Cr and Mo, during the dissociation of M23C6carbide.