Martensitic transformation and microstructure of dual-phase Ti44Ni47Nb9 shape memory alloy after high-velocity impact
Martensitic transformation and microstructure of dual-phase Ti44Ni47Nb9 shape memory alloy after high-velocity impact
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双相Ti44Ni47Nb9形状记忆合金高速冲击后的马氏体相变及显微组织
DOI：
10.1016/j.matchar.2016.10.028
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发表时间：
2016-12
影响因子：
4.7
通讯作者：
Zhiyong Gao
中科院分区：
文献类型：
--
作者：
Yingying Zhu;Haizhen Wang;Zhiyong Gao
研究了Ti44Ni47Nb9合金在1.0kM·S−下的高速冲击马氏体相变、显微组织和力学性能。在Johnson-Cook(J-C)材料模型的基础上，讨论了变形机理。结果表明，冲击试件沿冲击方向的相变行为、显微组织和力学性能呈现区域化特征。马氏体相变温度和逆相变温度在三次热循环中降低并趋于稳定。β-Nb颗粒及其界面位错密度最高。随着距离陨石坑距离的增加，变形恢复率呈先增大后减小的趋势。
Martensitic transformation, microstructure and mechanical properties of a Ti44Ni47Nb9alloy under a high-velocity impact at 1.0 km·s− 1were studied. The deformation mechanism was also discussed based on the Johnson–Cook (J–C) material model. The results showed that the transformation behavior, microstructure and mechanical properties along the impact direction of the impacted specimen exhibit regionalization characteristics. Martensite and reverse phase transformation temperature decreased and stabilized during three thermal cycles. Stress-induced martensite plates emerged in the matrix, and high-density dislocations were introduced into the matrix, β-Nb particles and their interface with the highest dislocation density at the interface. The deformation recovery tends to first increase and then decrease gradually with increasing distance from the crater.
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影响因子：
4.7
作者：
A. Jardine;J. Madsen;P. G. Mercado
通讯作者：
A. Jardine;J. Madsen;P. G. Mercado
影响因子：
9.4
作者：
B. Kockar;K. Atli;Ji Ma;M. Haouaoui;I. Karaman;M. Nagasako;R. Kainuma
通讯作者：
B. Kockar;K. Atli;Ji Ma;M. Haouaoui;I. Karaman;M. Nagasako;R. Kainuma
影响因子：
5.1
作者：
Meyer, HW;Kleponis, DS
通讯作者：
Kleponis, DS
影响因子：
4.7
作者：
M. Mohri;M. Mohri;M. Nili-ahmadabadi;V. Chakravadhanula
通讯作者：
M. Mohri;M. Mohri;M. Nili-ahmadabadi;V. Chakravadhanula
影响因子：
6
作者：
Xiao Xu;N. Thadhani
通讯作者：
Xiao Xu;N. Thadhani