Atom Probe Compositional Analysis of Interphase Precipitated Nano-Sized Alloy Carbide in Multiple Microalloyed Low-Carbon Steels

Atom Probe Compositional Analysis of Interphase Precipitated Nano-Sized Alloy Carbide in Multiple Microalloyed Low-Carbon Steels
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多种微合金化低碳钢中相间析出纳米合金碳化物的原子探针成分分析

DOI:
10.1017/s1431927618015374
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发表时间:
2018
影响因子:
2.8
通讯作者:
Furuhara Tadashi
Furuhara Tadashi
中科院分区:
工程技术4区
文献类型:
--
作者:
Zhang Yongjie;Miyamoto Goro;Furuhara Tadashi

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用三维原子探针分析了V-Nb和V-Ti多元微合金化低碳钢中由相间析出形成的纳米级合金碳化物的成分。碳化物形成合金元素包括V、Nb和Ti,从等温处理的早期阶段同时析出,其原子均匀地分布在碳化物颗粒中,即使在长时间保持之后。采用最大分离度法对合金碳化物进行聚类分析,并采用不同方法优化参数。用替位碳化物形成合金元素的位分数评价合金碳化物的组成表明,在其形成的早期阶段,Nb和Ti比V更强烈地富集。
The composition of nano-sized alloy carbides formed by interphase precipitation in V–Nb and V–Ti multiple microalloyed low-carbon steels is analyzed by using three-dimensional atom probe. Carbide-forming alloying elements including V, Nb, and Ti, are simultaneously precipitated from the early stage of isothermal treatment, whose atoms are uniformly distributed in the carbide particles, even after prolonged holding. Cluster analysis by the maximum separation method, with parameters optimized using different methods, is carried out to extract alloy carbides from matrix. The composition of alloy carbides evaluated by site fraction of substitutional carbide-forming alloying elements indicates that at the early stage of their formation, Nb and Ti are more strongly enriched than V.
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DOI: 10.1007/bf02811976
发表时间: 1979
期刊: Metallurgical Transactions A
影响因子: --
作者:
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