• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures >Investigation of Tensile Deformation Behaviour and Mechanical Properties of TiNi Shape Memory Alloy after High-current Electron Beam Surface Modification
【24h】

Investigation of Tensile Deformation Behaviour and Mechanical Properties of TiNi Shape Memory Alloy after High-current Electron Beam Surface Modification

机译：高电流电子束表面改性后TINI形状记忆合金拉伸变形行为及力学性能研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The impact of the pulse number at low-energy High-Current Pulsed Electron Beam (HCPEB) treatment at constant energy density E_s upon the deformation behavior of TiNi alloy, its inelastic properties and fracture pattern under quasistatic uniaxial tension are described. It is shown that inelastic properties of the TiNi alloy can be kept at the initial level whereas ductility and ultimate strength can be increased when the following parameters of low-energy high-current pulsed electron beam treatment are used: pulse duration τ= 2-2.5 μs, maximum electron energy 25 keV, energy density ES = 3.8 ± 0.7 J/cm2 as well as the pulsed irradiation mode and optimal number of irradiation HCPEB pulses (n) are taken. The HCPEB modification of the TiNi surface layer results in the increase of martensite yield plateau length, which is 15-30 % larger than one in the unirradiated TiNi samples. The strength properties decrease of the HCPEB-modified TiNi alloy at n = 15 due to the formation of a columnar structure in the matrix B2-phase. After the HCPEB treatment at n = 5 these parameters are varied due to the change of the chemical composition, namely, the nickel depletion of the B2-phase in the surface layer. The mentioned variation of the chemical composition of the matrix B2-phase is responsible for the increase in the temperature of the martensite transformations.
机译：描述了在TINI合金的变形行为上的低能量高电流脉冲电子束（HCPEB）处理下的脉冲数在恒定能量密度E_时的影响，其在Quasistatic单轴张力下的无弹性性质和裂缝图案。结果表明，当使用以下低能量高电流脉冲电子束处理时，可以保持TINI合金的无弹性性能，而使用以下参数τ= 2-2.5，可以增加延展性和极限强度μs，最大电子能源25keV，能量密度Es = 3.8±0.7J / cm 2以及脉冲照射模式以及最佳的照射HCPEB脉冲（N）。 TINI表面层的HCPEB改性导致马氏体产量高原长度的增加，其在未照射的TINI样品中大于1的15-30％。由于基质B2相中的形成柱状结构，N = 15的HCPEB改性的TINI合金的强度性能降低。在N = 5的HCPEB处理之后，这些参数由于化学组合物的变化而变化，即表面层中B2相的镍耗尽。提到的基质B2相的化学成分的变化是负责Marcensite转化的温度的增加。

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