DISLOCATION STRUCTURE OF Ni DEFORMED BY HIGH PRESSURE TORSION

机译：高压扭转变形Ni的位错结构

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High pressure torsion is a well-controlled deformation mode which allows studies of structural refinement over large strain ranges, beyond those obtainable by conventional processing. In the present study dislocation structures in Ni deformed by high pressure torsion at a pressure of 4 GPa to von Mises strains ranging from 0.53 to 5.2 have been investigated by TEM. Yield stresses have been estimated from hardness measurements. The findings are compared with results from rolled Ni. The two deformation modes show a similar evolution of both structure and yield stress.

机译：高压扭转是一种受良好控制的变形模式，它允许在大应变范围内进行结构细化的研究，这超出了传统工艺可获得的变形范围。在本研究中，通过TEM研究了在4 GPa的压力下因扭力变形而变形的Ni的位错结构对von Mises应变范围从0.53到5.2。屈服应力已从硬度测量值中估算出来。将结果与轧制镍的结果进行比较。两种变形模式显示出结构和屈服应力的相似演变。

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《22nd Riso International Symposium on Materials Science, Sep 3-7, 2001, Roskilde, Denmark》|2001年|p.435-440|共6页
会议地点 Roskilde(DK)
作者
G. Winther; N. Hansen; T. Hebesberger; X. Huang; R. Pippan; M. Zehetbauer;
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Materials Research Department, Ris0 National Laboratory, Denmark;

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原文格式 PDF
正文语种 eng
中图分类一般工业技术;
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DISLOCATION STRUCTURE OF Ni DEFORMED BY HIGH PRESSURE TORSION

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