Mechanical Properties and the Microstructure of Ni-Ti Alloy at High Strain Rate

被引：0

作者：

Yang Shengnan ^{[1
]}

Yang Suyuan ^{[1
]}

Zhang Xiao ^{[1
]}

Wu Qiong ^{[1
]}

机构：

[1] Beijing Inst Technol, Natl Key Lab Sci & Technol Mat Shock & Impact, Beijing 100081, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2016年 / 45卷 / 11期

关键词：

Ni-Ti alloy; SIM (stress induced martensite); high strain rate; microstructure; SHAPE-MEMORY ALLOY;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quasi-static and dynamic mechanical properties of Ni-Ti shape memory alloy bars were investigated by an electronic universal testing machine (INSTRON5985) and Split-Hopkinson Pressure Bar (SHPB), and the microstructure in different conditions was analyzed by microscopic analysis methods, including XRD, OM and SEM. The results show that the Ni-Ti alloy original microstructure consists of B2 austenitic phase, B19' martensite phase and Ni4Ti3 phase with small equiaxed grains; stress induced martensite (SIM) phase transformation occurs during quasi-static and dynamic compression; however, the dynamic compression stress-strain curve show a strain rate hardening effect rather than a yield platform; within a certain range of strain rate, the striped microstructure increases with the increase of strain rate, and the SIM phase transformation expands.

引用

页码：2847 / 2850

页数：4

共 9 条

[1] Compressive superelastic behavior of a NiTi shape memory alloy at strain rates of 0.001-750 s-1
Chen, WW
Wu, QP
Kang, JH
Winfree, NA
[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 2001, 38 (50-51) : 8989 - 8998
[2] Dynamic loading of polycrystalline shape memory alloy rods
Lagoudas, DC
Ravi-Chandar, K
Sarh, K
Popov, P
[J]. MECHANICS OF MATERIALS, 2003, 35 (07) : 689 - 716
[3] Liu JX, 2013, RARE METAL MAT ENG, V42, P942
[4] Liu Keyong, 2007, MAT RES APPL, V1, P86
[5] Lu Peng, 2013, APPL SCI TECHNOLOGY, V40, P61
[6] Superelastic and cyclic response of NiTiSMA at various strain rates and temperatures
Nemat-Nasser, S
Guo, WG
[J]. MECHANICS OF MATERIALS, 2006, 38 (5-6) : 463 - 474
[7] Very high strain-rate response of a NiTi shape-memory alloy
Nemat-Nasser, S
Choi, JY
Guo, WG
Isaacs, JB
[J]. MECHANICS OF MATERIALS, 2005, 37 (2-3) : 287 - 298
[8] ZHAO L C, 2002, SHAPE MEMORY EFFECT
[9] Zhou Hongxia, 2008, J NAVAL AERONAUTICAL, V23, P701

← 1 →