Exploratory Study of the Dynamic Fracture Ductility of TRIP and 300M Steels.
Abstract
High stress transformation plasticity offers a means of increasing the strength as well as the ductility and toughness of steels. The additional energy absorption associated with the martensitic transformation during deformation is responsible for the enhanced fracture toughness. Prior studies at Syracuse University have shown that the martensite content at fracture is a function of the test temperature and that the notch toughness is strongly temperature dependent. Gold and Koppenaal have reported that TRIP steel exhibited embrittlement at a specific strain rate and testing temperature. The studies by Azrin et al., Weiss et al. and Zackay et al. have shown that an optimum combination of strength, toughness and fatigue crack growth resistance required careful control of austenite metastability with respect to the service condition. For example, a TRIP steel that exhibits high strength and toughness under relatively low strain rates at room temperature may suffer a significant loss of uniform ductility at very high strain rates. Also the same TRIP steel may be inferior in fatigue crack propagation resistance to an ultra high strength material.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1979
- Accession Number
- ADA069909
Entities
People
- Albert Wu
- John Biegel
- Volker Weiss
Organizations
- Syracuse University