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Formation of ultra fine grained structure and mechanical properties by ECAP deformation

机译：通过ECAP变形形成超细晶粒结构和力学性能

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Commercial pure titanium was deformed by equal channel angular pressing (ECAP) using up to 8 passes. The evolution of microstructure and fracture character were observed by optical microscopy (OM) and spectral analysis microscopy (SEM). The mean grain size decreased with increasing deformation,after 8 passes to 300 run.Microscopy analysis suggested the possible ultra-fine structure mechanism by the formation of cellular structure in grains,forming of subgrains and then forming of high angle grains with random orienta tion.Fractures of ECAP titanium material after 8 passes had transcrystall ductile character with dimple morphology.

机译：商业纯钛通过等通道角挤压（ECAP）进行了多达8次的变形。用光学显微镜（OM）和光谱分析显微镜（SEM）观察组织的演变和断裂特性。平均晶粒尺寸随着变形的增加而减小，在经过8次至300运行之后。显微分析表明，可能的超细结构机理是：晶粒中形成了蜂窝结构，形成了亚晶粒，然后形成了具有随机取向的高角度晶粒。 ECAP钛材料经过8次通过后的断裂具有晶状韧性特征，具有酒窝形态。

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来源
《Rare metals》|2009年|p.770-773|共4页
会议地点 Jiaxing(CN)
作者
Miroslav Greger; Miroslav Kursa; Jarom(I)r Dr(a)pala;
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作者单位

VSB-Technical University of Ostrava,Faculty of Metallurgy and Materials Engineering,Av.17.listopadu 15,708 33 Ostrava-Poruba,Czech Republic;

VSB-Technical University of Ostrava,Faculty of Metallurgy and Materials Engineering,Av.17.listopadu 15,708 33 Ostrava-Poruba,Czech Republic;

VSB-Technical University of Ostrava,Faculty of Metallurgy and Materials Engineering,Av.17.listopadu 15,708 33 Ostrava-Poruba,Czech Republic;

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中图分类稀有金属和少量金属;
关键词
titanium; ultra-fine grained structure; equal channel angular pressing;

机译：钛;超细晶组织;等径角挤压;

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Formation of ultra fine grained structure and mechanical properties by ECAP deformation

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