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剧烈塑性变形在生产超细晶材料方面已经显示了巨大的潜力.虽然大量的研究集中在晶粒细化上,等通道转角挤压和高压扭转等剧烈塑性变形过程正在越来越多地被应用于其他领域诸如粉末固结,利用变形引发相变制作新颖结构与成分,获得多相及多尺度材料以及固态回收技术.本文引用我们近十年来的研究成果以介绍剧烈塑性变形在晶粒细化之外的诸多应用.特别是利用剧烈塑性变形颗粒固结来制取大块铝、钛、铝/钛双相合金和铝基纳米复合材料,利用机械激活和强制合金化来获得包括面心立方在内的新型钛结构,利用剧烈塑性变形引发的相变来制备纳米晶beta钛合金,以及利用等通道转角挤压来固态回收钛合金切削料.最后,对存在的挑战和机会进行了探讨.
Fierce plastic deformation has shown great potential in the production of ultrafine-grained materials.Although a large number of studies have focused on grain refinement, the severe plastic deformation processes such as isotropic channel cornering and high-pressure torsion are increasingly being applied In other fields, such as powder consolidation, the use of deformation-induced phase change to create a novel structure and composition, access to multi-phase and multi-scale materials and solid state recovery technology.This article cites our research results over the past decade to introduce the drastic plastic deformation in the grain refinement In particular, the use of intense plastic deformation of the particle consolidation to produce bulk aluminum, titanium, aluminum / titanium dual-phase alloy and aluminum-based nanocomposites, the use of mechanical activation and for alloying to obtain, including face-centered cubic , The new type of titanium structure is used to prepare the nanocrystalline beta titanium alloy by the phase transition caused by severe plastic deformation and the titanium alloy cutting material is recovered by the same channel angular extrusion.Finally, the existing challenges and opportunities are discussed.