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Processing Of Ultrafine-grained Materials Using Severe Plastic Deformation: Potential For Achieving Exceptional Properties

机译:使用严重的塑性变形处理超细颗粒材料:实现优异性能的潜力

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摘要

The processing of polycrystalline metals through the application of severe plastic deformation is attracting muchrnattention because of the potential for achieving significant grain refinement to the submicrometer or nanometer level. This paper reviews the principles of this type of processing with emphasis on two different techniques: Equal-Channel Angular Pressing and High-Pressure Torsion. Exceptional properties may be achieved from these processes including high strength at ambient temperatures and a rapid superplastic forming capability at elevated temperatures. Some examples are presented demonstrating the potential use of this type of processing.
机译:通过施加严重的塑性变形来加工多晶金属引起了人们的极大关注,因为它具有将晶粒细化到亚微米或纳米水平的潜力。本文回顾了这种处理的原理,重点介绍了两种不同的技术:等通道角挤压和高压扭转。通过这些方法可以获得优异的性能,包括在环境温度下的高强度和在高温下的快速超塑性成形能力。给出了一些例子,证明了这种处理的潜在用途。

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