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Observations on the Nonlinear Unloading Behavior of Advanced High Strength Steels
- Issue Date
- 1월-2015
- Publisher
- SPRINGER
- Citation
- METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v.46A, no.1, pp.18 - 22
- Indexed
- SCIE
SCOPUS
- Volume
- 46A
- Number
- 1
- Start Page
- 18
- End Page
- 22
- ISSN
- 1073-5623
- Abstract
- The unloading behavior was compared for three different steel grades: a dual-phase steel, a transformation-induced plasticity steel, and a twinning-induced plasticity steel. Steels that harden by phase transformation or deformation twinning exhibited a smaller component of microplastic strain during unloading and a smaller reduction in the chord modulus compared to the conventional hardening steel. As a result, unloading is closer to pure elastic unloading when the TRIP effect or TWIP effect is active.
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