Modeling Temperature and Strain Rate History Effects in OFHC Cu
Abstract
Linking macro-scale material behavior with the evolution of microstructure has proven effective in obtaining an appropriate mathematical structure for constitutive relationships. Incorporation of strain rate, temperature, and deformation path history effects are especially critical to accurately predict material responses for arbitrary non isothermal, variable strain rate conditions. Material constitutive equations contain numerous parameters which must be determined experimentally, and often are not fully optimized. The goal of this research was to develop more physically descriptive kinematics and kinetics models for large strain deformation based on internal state variable (ISV) evolution laws which include strain rate and temperature history dependence. A unique and comprehensive set of experiments involving sequences of different strain rates, temperatures, and deformation paths, as well as, constant strain rate, isothermal and experiments characterizing restoration processes were conducted on OFHC Cu.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 28, 1998
- Accession Number
- ADA345850
Entities
People
- Albert B. Tanner
Organizations
- Georgia Tech