Transactions of Materials and Heat Treatment

Title：Deformation and stability analysis of single crystal for single slip

Authors： LI Yue-yu LIU Shu-chun

Unit： Huaihai Institute of Technology

KeyWords： meso-plasic mechanics stability instability parameter single crystal single slip

ClassificationCode：O344

year,vol(issue):pagenumber：2011,36(1):133-135

Abstract：

Deformation and stability of single crystal for single slip under simple tension were studied based on the point of meso-plastic mechanics of crystal. The change rules of the direction of slip surface and direction of slip along with the strain ε were presented quantitatively. The instability parameter S was defined and the condition of stability of plastic deformation represented by normal stress and normal strain was changed to shear stress and shears strain fitted for applying meso-plastic mechanics. The results show that the slip planes deflect to the direction of tension and trend to accordant, the larger strain ε is, the smaller λ （angle of slip direction） is and the larger χ( angle of slip surface direction)is; the larger strain ε is, the smaller the instability parameter S is.

Funds：

江苏省自然科学基金项目编号（BK2008189）

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