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- Title
Dramatic Increase of Strength and Ductility in Fe–22Mn–1.0C Twinning‐Induced Plasticity Steel at Elevated Temperature.
- Authors
Yang, Hao Kun; Tian, Yan Zhong; Zhang, Zhe Feng
- Abstract
Tensile properties and microstructural evolutions of Fe–22Mn–1.0C (wt%) twinning‐induced plasticity steel are investigated in the temperature range from 293 to 443 K. An unexpected enhancement of strength and ductility is observed at the elevated temperature of 443 K (≈400 MPa ultimate tensile strength and ≈10% true strain improvements). The twinning capability is still kept stable with the increasing temperature, and the premature fracture is postponed by suppressing dynamic strain aging effect. As a result, the synchronous improvement of strength and plasticity is achieved at high deformation temperature. The Fe–22Mn–1.0C (wt%) twinning‐induced plasticity steel exhibits unexcepted strength and ductility enhancements at high temperature of 443 K. The suppressed dynamic strain aging effect postpones the premature fracture. Besides, the twinning capability keeps stable within temperature from 293 to 443 K. The Fe–22Mn–1.0C steel should be a structure material for high temperature application.
- Subjects
HIGH temperatures; MATERIAL plasticity; DUCTILITY; TENSILE strength; MATERIALS at high temperatures; STRESS-strain curves
- Publication
Advanced Engineering Materials, 2019, Vol 21, Issue 3, pN.PAG
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.201800670