Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7973242 | Materials Science and Engineering: A | 2018 | 6 Pages |
Abstract
The influence of pre-strain on the tension and creep behavior of Al-Mn-Mg containing nano-sized TiC particles at elevated temperatures was investigated. Introduction of TiC nano-particles and the application of pre-strain significantly increase the strength at the ambient temperature and at 473â¯K, even though the strengthening effect diminishes at 573â¯K due to the more activated dislocation climb. Small pre-strain (von Mises strain of 0.2) could increase the yield strength at 573â¯K from 72â¯MPa to 96â¯MPa. Larger pre-strain promotes the precipitation during hot deformation at 573â¯K, and concurrent precipitation suppresses work softening by the pinning effect, leading to a significantly enhanced ductility and creep rupture life.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Qinglong Zhao, Huidi Zhang, Xiaoxian Zhang, Feng Qiu, Qichuan Jiang,