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近 α 钛合金静动态力学行为研究进展
Research Status of the Static and Dynamic Mechanical Behaviors ofNear-α Titanium Alloys
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- DOI:
- 作者:
- 杜立成，杨浩雪，吴韵桀，王 毅，王 军，李金山
DU Licheng, YANG Haoxue, WU Yunjie, WANG Yi, WANG Jun, LI Jinshan
- 作者单位:
- 西北工业大学 凝固技术国家重点实验室，陕西 西安 710072
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
- 关键词:
- 近 α 钛合金；合金成分；织构；动态力学性能；绝热剪切
near-α titanium alloys; alloy composition; texture; dynamic mechanical properties; adiabatic shear
- 摘要:
- 近 α 钛合金具备卓越的机械性能与高比强度，在较宽的温度区间内展现出优异的蠕变性能和杰出的抗疲劳性，是航空、航天、水利、电力、冶金等众多领域不可或缺的结构材料之一。 当前，随着对航空航天领域以及极寒区域的持续探索，对钛合金结构材料的性能要求愈发严苛。 不但要求钛合金具有更高的静态力学性能，还对其动态力学性能提出了更高的要求，以适应极端环境。 钛合金的成分主要决定了其类型和性能，而通过恰当的热加工、冷加工以及热处理，可以进一步对其物理和机械性能进行调控。因此，本文综述了近 α 钛合金静动态力学行为的影响因素，探讨了元素成分与织构对近 α 钛合金力学性能的影响，总结了近 α 钛合金在高应变率下的动态力学行为研究现状。
Near-α titanium alloys have excellent mechanical properties and high specific strength, exceptional creepproperties and fatigue resistance within a wide temperature range and are among the indispensable structural materials innumerous fields, such as aerospace, water conservancy, electric power, and metallurgy. Currently, with the continuousexploration of the aerospace field and extremely cold regions, the requirements for the performance of titanium alloystructural materials have become more stringent. Titanium alloys are not only required to possess relatively high staticmechanical properties but also place high demands on their dynamic mechanical properties to adapt to extremeenvironments. The composition of titanium alloys primarily determines their type and performance. Moreover, throughappropriate hot working, cold working, and heat treatment, their physical and mechanical properties can be furtherregulated. Therefore, this paper reviews the factors influencing the static and dynamic mechanical behavior of near-αtitanium alloys, discusses the effects of elemental composition and texture on the mechanical properties of near-α titaniumalloys, and summarizes the research status of the dynamic mechanical behavior of near-α titanium alloys under high strainrates.