Structural and mechanical, properties of nanocrystalline titanium processed by severe plastic deformation
Structural and mechanical, properties of nanocrystalline titanium processed by severe plastic deformation
复制标题
通过剧烈塑性变形加工的纳米晶钛的结构与力学性能
DOI：
10.1016/s1359-6462(97)00210-8
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发表时间：
1997-10-01
影响因子：
6
通讯作者：
Valiev, RZ
中科院分区：
文献类型：
--
作者：
Popov, AA;Pyshmintsev, IY;Valiev, RZ
最近的研究表明，具有超细晶粒（UFG）结构（纳米和亚微米晶体）的材料可以通过剧烈的塑性变形来加工。这种方法的一个优点是它可以应用于纯金属和合金。此外，它生产的样品没有残余孔隙，因此可以对物理和机械性能进行有意义的测量。对超细晶粒铜和铝合金的研究揭示了它们的机械行为的一些特定特征，即极高的硬度和强度，不存在应变硬化，以及偏离Hall-Petch关系。研究了超细晶纯钛的力学性能和热稳定性。
Recent investigations have demonstrated that materials with ultrafine grain (UFG) structure (nano- and submicron crystalline) can be processed by severe plastic deformation. One advantage of this method is that it can be applied to both pure metals and alloys. Moreover, it produces samples that have no residual porosity so that meaningful measurements of the physical and mechanical properties are possible. Investigations of ultrafine grain copper and aluminum alloys have revealed a number of specific features of their mechanical behavior, namely extremely high hardness and strength, the absence of strain hardening, and deviation form the Hall-Petch relationship. In this work the authors investigate the mechanical properties and thermal stability of UFG titanium.