对Ti-7.5Nb-4Mo-2.5Sn形状记忆合金试样以及带有几何缺陷(中心圆孔和单边半圆缺口)合金试样的力学性能及超弹性能进行测试,并采用ARAMIS三维变形分析测试系统对单轴加载-卸载过程中试样的全场应变场分布进行实时观察,研究几何缺陷对合金应变场分布、应力诱发马氏体相变和超弹性能的影响.结果表明:在拉伸加载过程中,带几何缺陷的试样在缺陷周围产生了应力集中,导致合金试样在局部具有较高的应变速率和应变量;应力诱发马氏体相变主要受应力场分布的影响,而且主要发生在局部变形带中.因此,与完整试样相比,带几何缺陷的试样表现出较高的诱发马氏体相变的临界应力和较低的超弹性.
参考文献
| [1] | FILIP P,LAUSMAA J,MUSIALEK J,MAZANEC K .Structure and surface of TiNi human implants[J].Biomaterials,2001,22 |
| [2] | 阮建明,黄伯云,M.H.Grant.金属毒性研究（Ⅰ）[J].中国有色金属学报,2001(06):960-965. |
| [3] | 阮建明,黄伯云,M.H.Grant.金属毒性研究（Ⅰ）[J].中国有色金属学报,2001(06):960-965. |
| [4] | LIU X Y,CHU P K,DING C X .Surface modification of titanium,titanium alloys,and related materials for biomedical applications[J].Materials Science and Engineering R,2004,47(3):49-121.,2004. |
| [5] | 赵婷婷,李岩,魏松波,相艳.生物医用TiNi形状记忆合金表面改性研究进展[J].稀有金属材料与工程,2010(z1):320-323. |
| [6] | 尹燕,夏天东,赵文军,刘天佐.钛合金/HA涂层新型医用复合材料的制备及研究现状[J].兰州理工大学学报,2004(04):26-30. |
| [7] | 李红梅,雷霆,方树铭,黄光明.生物医用钛合金的研究进展[J].金属功能材料,2011(02):70-73. |
| [8] | 贺志荣,周敬恩,宫崎修一.固溶时效态Ti-Ni合金相变行为与Ni含量的关系[J].金属学报,2003(06):617-622. |
| [9] | ZHOU Y L,NIINOMI M .Ti-25Ta alloy with the best mechanical compatibility in Ti-Ta alloys for biomedical applications[J].Materials Science and Engineering C,2009,29(3):1061-1065.,2009. |
| [10] | GRANDI D,MARALDI M,MOLARI L .A macroscale phase-field model for shape memory alloys with non-isothermal effects:Influence of strain rate and environmental conditions on the mechanical response[J].Acta Materialia,2012,60(1):179-191.,2012. |
| [11] | SUN F,HAO Y L .A thermo-mechanical treatment to improve the superelastic performances of biomedical Ti-26Nb and Ti-20Nb-6Zr (at.%) alloys[J].Journal of Mechanical Behavior of Biomedical Materials,2011,4(8):1864-1872.,2011. |
| [12] | WANG L,LU W .Change in microstructures and mechanical properties of biomedical Ti-Nb-Ta-Zr system alloy through cross-Rolling[J].Materials Transactions,2008,49(8):1791-1795.,2008. |
| [13] | POPOV P,LAGOUDAS D C .A 3-D constitutive model for shape memory alloys incorporating pseudoelasticity and detwinning of self-accommodated martensite[J].International Journal of Plasticity,2007,23:1679-1720.,2007. |
| [14] | CHEN C P,LAKES R S .Holographic study of conventional and negative Poisson's ratio metallic foams:Elasticity,yield and micro-deformation[J].Journal of Materials Science,1991,26(20):5397-5402.,1991. |
| [15] | ZHANG J,CAI Y X,YEW J,YU T X .On the use of the digital image correlation method for heterogeneous deformation measurement of porous solids[J].Optics and Lasers in Engineering,2011,49(2):200-209.,2011. |
| [16] | PAN B,LI K .A fast digital image correlation method for deformation measurement[J].Optics and Lasers in Engineering,2011,49(7):841-847.,2011. |
| [17] | TANG Z Z,LIANG J,XIAO Z Z,GUO C .Large deformation measurement scheme for 3D digital image correlation method[J].Optics and Lasers in Engineering,2012,50(2):122-130.,2012. |
| [18] | ZHANG D C,LIN J G,JIANG W J,MA M,PENG Z G Shape memory and superelastic behavior of Ti-7 .5Nb-4Mo-1Sn alloy[J].Materials and Design,2011,32:4614-4617.,2011. |
| [19] | ZHANG D C,YANG S,WEI M,MAO Y F,LIN J G .Effect of Sn addition on the microstructure and superelasticity in Ti-Nb-Mo-Sn alloys[J].Journal of the Mechanical Behavior of Biomedical Materials,2012,13 |
| [20] | ZHANG D C,MAO Y F,LI Y L,LI J J,LIN J G .Superelastic behavior of β-type titanium alloy[J].Journal of the Mechanical Behavior of Biomedical Materials,2013,20 |
| [21] | ISHIYAM S,HANADA S,IZUMI O .Effect Phase of Zr,Sn and Al additions on deformation mode and beta phase stability of metastable beta Ti alloys[J].ISIJ International,1991,31(8):807-813.,1991. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%