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引用次数: 0
摘要
探索钛及其合金在不同温度下的变形行为,尤其是在低温范围内的变形行为,对于开发强度和韧性高的钛合金来说至关重要。本研究经过精心设计,重点研究纯钛在 77 K、180 K、240 K 和 298 K 温度下的变形微观结构和机械性能。拉伸结果表明,随着变形温度的降低,强度和延展性以及加工硬化能力同时增强。定量分析表明,这种优异的机械性能和硬化能力归因于高孪晶密度以及在低温下从{11-22}孪晶到{10-12}孪晶的主要孪晶变化。因此,本研究通过对温度介导的孪晶活性进行策略性控制,为了解和开发钛合金提供了潜在的启示。
Deformation twinning and mechanical property of strongly textured titanium deformed at low temperatures
The exploration of deformation behaviors within titanium and its alloys across a spectrum of temperatures, in particular at the low temperature range, is imperative for the development of strong and tough titanium alloys. This study has been meticulously devised with an emphasis on the deformed microstructure and mechanical property of pure titanium at temperatures of 77 K, 180 K, 240 K, and 298 K. Tensile results indicate a concurrent enhancement in both strength and ductility, as well as the work hardening capacity, as the deformation temperature decreases. Quantitative analysis demonstrated such superior mechanical properties and hardening capacity are attributed to the high twin density and the predominant twin variations converting from {11−22} twins to {10−12} twins at low temperatures. Therefore, the present study potentially offers insights into the understanding and development of titanium alloys by facilitating the strategic manipulation of temperature-mediated twin activity.
期刊介绍:
Micron is an interdisciplinary forum for all work that involves new applications of microscopy or where advanced microscopy plays a central role. The journal will publish on the design, methods, application, practice or theory of microscopy and microanalysis, including reports on optical, electron-beam, X-ray microtomography, and scanning-probe systems. It also aims at the regular publication of review papers, short communications, as well as thematic issues on contemporary developments in microscopy and microanalysis. The journal embraces original research in which microscopy has contributed significantly to knowledge in biology, life science, nanoscience and nanotechnology, materials science and engineering.