A probabilistic, semi-empirical approach to modeling diffusion bond strength.

Conference · Mon Jan 01 00:00:00 EST 2001

OSTI ID:975314

Dave, V R ^[1]; Hartman, D A ^[2]; Barieri, J M ^[3]

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1. Vivek R.
2. Daniel A.
3. Joann M.

Manufacture of critical diffusion bonded components could benefit from predictive models of diffusion bond joint strength. Existing models focus on porosity closure, which is a necessary but not sufficient condition for acceptable joint strength. The present work identifies modeled dynamics intrinsic to manufacturing but not captured in existing models. Controls regulating these dynamics are proposed, and the topography of real engineering surfaces is described by distribution functions. Pore closure kinetics then can successfully link initial surface topography and final porosity distribution, which in turn correlates to joint strength given experimental data linking porosity to joint strength.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• OSTI ID: 975314
• Report Number(s): LA-UR-01-2382; TRN: US201008%%47
• Resource Relation: Conference: Submitted to: 82nd Annual American Welding Society Meeting and Convention, May 6-10, Cleveland, OH
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DIFFUSION
DISTRIBUTION
KINETICS
POROSITY
TOPOGRAPHY
MATHEMATICAL MODELS
JOINTS
BONDING