冯辉,贺志荣,杜雨青,叶俊杰,张坤刚,张涛

• 1:陕西理工大学材料科学与工程学院

摘要(Abstract)：

采用拉伸实验研究了退火温度、变形速率、变形温度和应力-应变循环等对退火态Ti-51.1Ni形状记忆合金力学性能、形状记忆效应(SME)和超弹性(SE)的影响。结果表明,随退火温度(T_a)升高,Ti-51.1Ni合金的抗拉强度(R_m)先升高后降低,极大值1650 MPa和极小值1060 MPa分别在400℃和650℃退火后取得,650℃退火态合金的塑性最好。当变形速率在2～12 mm/min范围内时,变形速率对Ti-51.1Ni合金拉伸性能影响不大。随T_a升高,合金的应力诱发马氏体临界应力(σ_M)先降低后升高,残余应变(ε_r)先升高后降低,350℃和600℃以上温度退火态合金呈SE,400～550℃退火态合金呈SME。随变形温度(T_d)升高,合金的σ_M升高,ε_r降低,形状记忆行为由SME向SE转变;当T_d为-20℃和0℃时合金呈SME,T_d为25℃时合金呈SME+SE,T_d超过25℃后合金呈SE。随应力-应变循环次数增加,350℃退火态合金的SE最稳定,500℃退火态合金的SME最稳定。

关键词(KeyWords)： Ti-51.1Ni合金;形状记忆合金;残余应变;变形温度;变形速率

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2016YFE0111400);; 陕西省重大科技创新项目(2017ZKC04-84);; 陕西理工大学研究生创新项基金目(SLGYCX1823)

作者(Author): 冯辉,贺志荣,杜雨青,叶俊杰,张坤刚,张涛

DOI: 10.13289/j.issn.1009-6264.2019-0084

参考文献(References)：

• [1] Saikrishna C N,Ramaiah K V,Paul D,et al.Enhancement in fatigue life of NiTi shape memory alloy thermal actuator wire[J].Acta Materialia,2016,102:385-396.
• [2] He Z R,Liu M Q.Effect of heat treatment on transformation behavior of Ti-Ni-V shape memory alloy[J].Materials Science and Engineering A,2011,528(22/23):6993-6997.
• [3] 张晓,杨素媛.Ni-Ti形状记忆合金侵彻变形与断裂研究[J].稀有金属材料与工程,2016,45(5):1235-1239.ZHANG Xiao,YANG Su-yuan.Deformation and fracture of Ni-Ti shape memory alloys under the penetration of projectiles[J].Rare Metal Materials and Engineering,2016,45(5):1235-1239.
• [4] 贺志荣.Ti-Ni-V形状记忆合金超弹性研究[J].稀有金属材料与工程,2015,44(7):1639-1642.HE Zhi-rong.Superelasticity of Ti-Ni-V shape memory alloys[J].Rare Metal Materials and Engineering,2015,44(7):1639-1642.
• [5] 刘书芹,袁志山,王江波.热变形对TiNi形状记忆合金丝材力学性能以及超弹性的影响[J].热加工工艺,2007,36(22):21-23.LIU Shu-qin,YUAN Zhi-shan,WANG Jiang-bo.Effect of hot drawing process on mechanical properties and superelasticity of TiNi shape memory alloy wires[J].Hot Working Technology,2007,36(22):21-23.
• [6] 刘克勇,蔡伟,赵连城.长期约束条件下TiNi合金超弹性衰减研究[J].功能材料,2009,40(2):260-264.LIU Ke-yong,CAI Wei,ZHAO Lian-cheng.TiNi alloy superelasticity degradation under constrained strain conditions[J].Functional Materials,2009,40(2):260-264.
• [7] 袁志山,马嘉丽,冯昭伟,等.温度循环对镍钛形状记忆合金超弹性和相变行为的影响[J].热加工工艺,2018,47(20):202-205.YUAN Zhi-shan,MA Jia-li,FENG Zhao-wei,et al.Effect of temperature cycling on superelasticity and phase transformation behavior of NiTi shape memory alloy[J].Hot Working Technology,2018,47(20):202-205.
• [8] Tang W,Sundman B,Sandstr?m R,et al.New modelling of the B2 phase and its associated martensitic transformation in the Ti-Ni system[J].Acta Materialia,1999,47(12):3457-3468.
• [9] 贺志荣,王芳,王永善,等.V和Cr对Ti-Ni超弹性合金相变和形变特性的影响[J].金属学报,2007,43(12):1293-1296.HE Zhi-rong,WANG Fang,WANG Yong-shan,et al.Effects of V,Cr on transformation and deformation characteristics of Ti-50.8Ni superelastic alloy[J].Acta Metallurgica Sinica,2007,43(12):1293-1296.
• [10] 杜雨青,贺志荣,王芳,等.退火对窄热滞Ti-Ni-Cu-Cr形状记忆合金组织和拉伸性能的影响[J].材料热处理学报,2018,39(9):30-35.DU Yu-qing,HE Zhi-rong,WANG Fang,et al.Effect of annealing on microstructure and tensile properties of narrow hysteresis Ti-Ni-Cu-Cr shape memory alloy[J].Transactions of Materials and Heat Treatment,2018,39(9):30-35.
• [11] 黄海友,王伟丽,刘记立,等.高性能Cu基形状记忆合金组织设计研究进展[J].中国材料进展,2016,35(11):835-842.HUANG Hai-you,WANG Wei-li,LIU Ji-li,et al.Progress on microstructure design of high performance Cu-based shape memory alloys[J].Materials China,2016,35(11):835-842.
• [12] 刘艳,贺志荣,王芳,等.Ti-50.8Ni合金的相变、形状记忆和超弹性特性[J].稀有金属材料与工程,2011,40(8):1412-1416.LIU Yan,He Zhi-rong,WANG Fang,et al.Transformation,shape memory and superelasticity characteristics of Ti-50.8Ni alloy[J].Rare Metal Materials and Engineering,2011,40(8):1412-1416.
• [13] 陈云,吕西林,蒋欢军.新型耗能增强型形状记忆合金阻尼器减震性能研究[J].湖南大学学报(自然科学版),2013,40(2):31-38.CHEN Yun,Lü Xi-lin,JIANG Huan-jun.Seismic performance study on new enhanced energy dissipation SMA damper[J].Journal of Hunan University(Natural Sciences),2013,40(2):31-38.
• [14] 刘文光,董秀玲,何文福,等.位移放大型阻尼墙减震结构的模型试验与数值分析[J].振动工程学报,2015,28(4):601-609.LIU Wen-guang,DONG Xiu-ling,HE Wen-fu,et al.Dynamic tests and numerical response analysis of new energy dissipated structures with displacement amplification damper[J].Journal of Vibration Engineering,2015,28(4):601-609.
• [15] Londoňo J M,Neild S A,Wagg D J.Using a damper amplification factor to increase energy dissipation in structures[J].Engineering Structures,2015,84:162-171.
• [16] 吴宏磊,丁洁民,崔剑桥,等.超高层建筑结构加强层耗能减震技术及连接节点设计研究[J].建筑结构学报,2014,35(3):8-15.WU Hong-lei,DING Jie-min,CUI Jian-qiao,et al.Study on energy dissipation technology and connection design for outriggers and belt members of super high-rise buildings[J].Journal of Building Structures,2014,35(3):8-15.

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