等通道转角挤压制备超细晶材料的研究与发展

doi:10.11896/j.issn.1005-023X.2017.01.016

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Abstract Equal channel angular pressing is one of the methods to prepare ultrafine grained materials by sever plastic deformation. The materials with large grain size can be extruded at room temperature. This thesis summarized the mold parameters of ECAP, influence factors of process conditions, the improvement of mold and preparation method, refinement mechanism, microstructure stability and properties of manufacturing ultrafine grained materials. Combined with the part of the research results, it shows that the ECAP mold is constantly being improved and optimized and composite extrusion technologies has appeared. Nowadays, it makes continuous ultrafine grained ECAP technology come true. Grain refinement of ECAP is mainly due to shear stress and the effect of the second phase particles. ECAP grain refinement mechanism and combined technology have become a hot research to-pic. Higher application requirements of ultrafine grained materials are raised in different areas. It is also a challenge severe plastic deformation manufacture technology itself.

Key words： severe plastic deformation ultrafine-grained materials equal channel angular pressing refining mechanism

Published: 02 May 2018

CLC number:

TB376

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	Articles by authors
	ZHANG Zhenwei
	WANG Junli
	ZHANG Qinglong
	SHI Qingnan

Cite this article:

ZHANG Zhenwei,WANG Junli,ZHANG Qinglong, et al. Producing Ultrafine-grained Materials by Equal Channel Angular Pressing: A Review[J]. Materials Reports, 2017, 31(1): 116-125.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.01.016 OR http://www.mater-rep.com/EN/Y2017/V31/I1/116

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