Damage Mechanisms of PM Ti-6Al-4V at Cryogenic Temperature

机译：低温下PM Ti-6Al-4V的损伤机理

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The rupture and the damage processes at cryogenic temperature of an extra low interstitial Ti-6Al-4V obtained by powder metallurgy are investigated. The voids formation is analysed with the help of tensile interrupted tests on axisymetric notched specimens. Through SEM observations, it is attempted to identify the microstructural features that control the damage. Besides, FEM analysis has been performed to assess the local mechanical parameters which are known to act on the growth of cavities, such as cumulated plastic strain or stress triaxiality. As far as rupture is concerned, the FEM analysis shows that cumulated plastic strain and the maximum principal stress may be the relevant parameters.

机译：研究了通过粉末冶金获得的极低间隙Ti-6Al-4V在低温下的破裂和破坏过程。借助在轴测带缺口的试样上进行的拉伸间断试验来分析空隙的形成。通过SEM观察，试图确定控制损伤的微观结构特征。此外，已经进行了有限元分析以评估局部机械参数，这些参数已知会影响腔体的生长，例如累积的塑性应变或应力三轴性。就破裂而言，有限元分析表明，累积塑性应变和最大主应力可能是相关参数。

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来源
《World Conference on Titanium v.3; 20030713-20030718; Hamburg; DE》|2003年|P.1485-1492|共8页
会议地点 Hamburg(DE);Hamburg(DE)
作者
S. Di Iorio; L. Briottet; E. F. Rauch; D. Guichard;
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作者单位

Comissariat a l'Energie Atomique, Grenoble, France;

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原文格式 PDF
正文语种 eng
中图分类钛;
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4. Damage Mechanisms of PM Ti-6Al-4V at Cryogenic Temperature [C] . S. Di Iorio, L. Briottet, E. F. Rauch, World conference on titanium . 2004

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Damage Mechanisms of PM Ti-6Al-4V at Cryogenic Temperature

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