Mechanical Hysteresis of Hexagonal Boron Nitride
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2011年第5期
论文作者：周爱国
文章页码：935 - 938
摘 要：Hexagonal boron nitride （h-BN） is an important structural material with layered microstructure.Because of the plastic anisotropy,this material shows obvious mechanical hysteresis （nonlinear elastic deformation）.There are hysteretic loops at the cyclical load-unload stress-strain curves of h-BN.Consequently,two hot-pressed h-BN cylinders with different textures were studied.The mechanical hysteresis is heavily texture-dependent.The area of hysteretic loop is linearly related with the square of loading stress-level.Two minor loops attached on the hysteretic loops with the same extreme stresses have congruent shapes.It can be concluded that the mechanical hysteresis of h-BN can be explained by a Kink Nonlinear Elastic model developed from the study of a ternary carbide Ti3SiC2.
周爱国
School of Materials Science and Engineering,Henan Polytechnic University
摘 要：Hexagonal boron nitride （h-BN） is an important structural material with layered microstructure.Because of the plastic anisotropy,this material shows obvious mechanical hysteresis （nonlinear elastic deformation）.There are hysteretic loops at the cyclical load-unload stress-strain curves of h-BN.Consequently,two hot-pressed h-BN cylinders with different textures were studied.The mechanical hysteresis is heavily texture-dependent.The area of hysteretic loop is linearly related with the square of loading stress-level.Two minor loops attached on the hysteretic loops with the same extreme stresses have congruent shapes.It can be concluded that the mechanical hysteresis of h-BN can be explained by a Kink Nonlinear Elastic model developed from the study of a ternary carbide Ti3SiC2.
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