ISSN:
1619-6937
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary Three stress solutions for a cylindrical particle on an interface bonded with two identical materials are obtained by using the pseudo-stress function developed previously. The stress solutions correspond to three different bonding mechanisms of a particle interface: 1) complete bonding of a rigid cylindrical particle, 2) radial bonding of the cylindrical rigid particle, and 3) complete bonding with deformable cylindrical particle in a perfectly viscous material. Using stress analysis results, the steady-state vacancy flux distribution at the interface of two materials (material interface) may be expressed as an in terms of the second derivative of normal stress on the interface with respect to two-dimensional space. The behavior of a vacancy sink or a vacancy source is found to be dependent on particle size, relative magnitude of material vs. particle properties, and bonding mechanisms, and loading conditions. In the case of the third stress solution, decohesion at the interface may be prevented by controlling a dimensionless parameter Ω1, which is a function of $${{\sigma _0 ^p } \mathord{\left/ {\vphantom {{\sigma _0 ^p } {\sigma _0 }}} \right. \kern-\nulldelimiterspace} {\sigma _0 }}$$ and the external stress and strain rate hardening exponent, where $$\sigma _0 ^p$$ and σ0 are associated with the particle and matrix constitutive equation $$\bar \sigma = \sigma _0 \dot \bar \varepsilon ^m$$ respectively.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01187262
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