Influence of Ni/Ti ratio and Nb addition on martensite transformation behavior of NiTiNb alloys
Influence of Ni/Ti ratio and Nb addition on martensite transformation behavior of NiTiNb alloys
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Ni/Ti比和Nb添加量对NiTiNb合金马氏体相变行为的影响
DOI：
10.1016/j.jallcom.2019.02.330
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发表时间：
2019-06-25
影响因子：
6.2
通讯作者：
Wen, Y. H.
中科院分区：
文献类型：
--
作者：
Fan, Q. C.;Zhang, Y.;Wen, Y. H.
基于设计的NixTiyNbz(x/y=1，1.0210，1.0425，1.0645，1.0869/x-y近似于0，1，2，3，4；z=0，2，4，6，9)合金，详细研究了Ni/Ti比和Nb加入量对NiTiNb合金马氏体相变行为的影响。分析了随着Ni/Ti比和Nb加入量的增加，合金的显微组织演变和价电子浓度(c(V))的变化。NiTiNb合金的Ms主要由B2-NiTi基体的显微组织和c(V)决定。不同的Ni/Ti比和Nb加入量会导致B2-NiTi基体的显微组织和c(V)的变化，从而影响熔体的熔点，如当x/y1时，随Nb加入量的增加，熔体的熔点先增大后减小，最后达到一个稳定状态。(C)2019爱思唯尔B.V.保留所有权利。
Based on the designed NixTiyNbz (x/y = 1, 1.0210, 1.0425, 1.0645, 1.0869/x-y approximate to 0, 1, 2, 3, 4; z = 0, 2, 4, 6, 9) alloys, influence of Ni/Ti ratio and Nb addition on martensite transformation behavior of NiTiNb alloys is elaborately examined. The microstructure evolution and valence electron concentrations (c(v)) were analyzed with increasing Ni/Ti ratio and Nb addition. The Ms of NiTiNb alloys are mainly determined by microstructure and c(v) of B2-NiTi matrix. Different Ni/Ti ratio and Nb addition result in the variation of microstructure and c(v) of B2-NiTi matrix, and thus influence Ms. For instance, when x/y 1, the Ms first increase and then decrease with increasing Nb addition, and finally also reach a steady state. (C) 2019 Elsevier B.V. All rights reserved.