• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Effects of annealing and deforming temperature on microstructure and deformation characteristics of Ti-Ni-V shape memory alloy
【24h】

Effects of annealing and deforming temperature on microstructure and deformation characteristics of Ti-Ni-V shape memory alloy

机译：退火和变形温度对Ti-Ni-V形状记忆合金组织和变形特性的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Effects of annealing temperature T_(an) and deforming temperature T_d on microstructure and deformation characteristics of Ti-50.8Ni-0.5V (atomic fraction, %) shape memory alloy were investigated by means of optical microscopy and tensile test. With increasing T_(an), the microstructure of Ti-50.8Ni-0.5V alloy wire changes from fiber style to equiaxed grain, and the recrystallization temperature of the alloy is about 580℃; the critical stress for stress-induced martensite σ_m of the alloy decreases first and then increases, and the minimum value 382 MPa is got at T_(an) = 450 ℃; the residual strain ε_R first increases, then decreases, and then increases, and its maximum value 2.5% is reached at T_(an) = 450 C. With increasing T_(d), a transformation from shape memory effect (SME) to superelasticity (SE) occurs in the alloy annealed at different temperatures, and the SME → SE transformation temperature was affected by T_(an); the σ_M of the alloy increases linearly; the ε_8 of the alloy annealed at 350-600 ℃ decreases first and then tends to constant, while that of the alloy annealed at 650 ℃ and 700 ℃ decreases first and then increases. To get an excellent SE at room temperature for Ti-50.8Ni-0.5V alloy, T_(an) should be 500-600 ℃.
机译：通过光学显微镜和拉伸试验研究了退火温度T_（an）和变形温度T_d对Ti-50.8Ni-0.5V形状记忆合金组织和变形特性的影响。随着T_（an）的增加，Ti-50.8Ni-0.5V合金丝的组织从纤维状转变为等轴晶，再结晶温度为580℃左右。合金的应力诱发马氏体σ_m的临界应力先减小后增大，T_（an）= 450℃时的最小值为382 MPa。残余应变ε_R先增大然后减小然后增大，在T_（an）= 450 C时达到最大值2.5％。随着T_（d）的增加，从形状记忆效应（SME）转变为超弹性SE）发生在不同温度退火的合金中，而SME→SE相变温度受T_（an）的影响；合金的σ_M线性增加；在350-600℃退火的合金ε_8先降低后趋于恒定，而在650℃和700℃退火的合金ε_8先降低然后升高。为了在室温下获得对Ti-50.8Ni-0.5V合金优异的SE，T_（an）应为500-600℃。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号