DISLOCATION STRUCTURE OF Ni DEFORMED BY HIGH PRESSURE TORSION

机译：通过高压扭转使NI变形的位错结构

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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：高压扭转是一种受控制的变形模式，其允许通过常规处理可获得的大应变范围的结构细化。在本研究中，通过TEM研究了在4GPa的压力下通过高压扭转而变形的Ni中的脱位结构，通过TEM研究了0.53至5.2的von MIS菌株。已经从硬度测量估计屈服应力。将研究结果与来自滚动Ni的结果进行比较。这两个变形模式显示了结构和屈服应力的类似演变。

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《Riso international symposium on materials science》|2001年||共6页
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G. Winther; N. Hansen; T. Hebesberger; X. Huang; R. Pippan; M. Zehetbauer;
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DISLOCATION STRUCTURE OF Ni DEFORMED BY HIGH PRESSURE TORSION

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