Harmonic-structured copper: performance and proof of fabrication concept based on severe plastic deformation of powders

被引：147
作者：
Sawangrat, Choncharoen [1 ]
Kato, Shota [1 ]
Orlov, Dmitry [2 ,3 ]
Ameyama, Kei [4 ]
机构：
[1] Ritsumeikan Univ, Fac Sci & Engn, Dept Mech Engn, Adv Mat Lab, Kusatsu, Shiga 5258577, Japan
[2] Ritsumeikan Univ, Res Org Sci & Technol, Kusatsu, Shiga 5258577, Japan
[3] Univ Nova Gorica, Mat Res Lab, Nova Gorica 5000, Slovenia
[4] Ritsumeikan Univ, Coll Sci & Engn, Dept Mech Engn, Kusatsu, Shiga 5258577, Japan
来源：
JOURNAL OF MATERIALS SCIENCE | 2014年 / 49卷 / 19期
基金：
日本科学技术振兴机构;
关键词：
OUTSTANDING MECHANICAL-PROPERTIES; HIGH-PRESSURE TORSION; BONDING ARB PROCESS; GRAIN-REFINEMENT; STRUCTURE DESIGN; TWIST EXTRUSION; STAINLESS-STEEL; PURE TITANIUM; MICROSTRUCTURE; ALLOY;
D O I：
10.1007/s10853-014-8258-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Pure copper (Cu) having bimodal 'harmonic structure' (HS) was fabricated by a technique based on severe plastic deformation of powders, which involved tailored mechanical milling and spark plasma sintering. The harmonic-structured Cu demonstrates a unique combination of high strength and large elongation superior to its homogeneous as well as bimodal heterogeneous counterparts. Specific features of harmonic structure, i.e. continuous network of ultra-fine grained (UFG) regions encompassing coarse-grained areas, lead to the extension of uniform elongation. The optimum combination of properties in pure Cu is found to be in the harmonic-structured material having 40 % UFG fraction.
引用
收藏
页码：6579 / 6585
页数：7
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