Effect of precipitation on the recrystallization behavior of a Nb containing steel
- POSCO, Pohang (Korea, Republic of). Steel Products and Welding Research Team
- RIST, Pohang (Korea, Republic of). Ferrous Physical Metallurgy Research Team
- POSTECH, Pohang (Korea, Republic of). Dept. of Materials Science and Engineering
An improvement of the mechanical properties in HSLA steels can be achieved by an addition of microalloying elements such as Nb, V, Ti, etc. Microalloying elements in HSLA steels exist as a form of either solute or precipitate in hot-deformed austenite. The solute dragging or precipitation pinning effect of microalloying elements suppresses recrystallization and, in turn, results in the improved mechanical properties due to the grain size refinement of the transformed ferrite. A number of investigations have been carried out to provide better understanding of the role of solute and precipitate on the recrystallization behavior. Although previous investigations have provided a valuable knowledge on the precipitation effect on the recrystallization, little information is at present available on the individual effect of each stage of precipitation, i.e., nucleation, growth and coarsening on the recrystallization. This has lead to a lack of precise analysis on the overall interaction between precipitation and recrystallization. Therefore, in the present investigation, the precipitation behavior of a steel containing Nb was examined and the effects of whole stage of precipitation on the recrystallization were analyzed.
- OSTI ID:
- 509164
- Journal Information:
- Scripta Materialia, Vol. 36, Issue 11; Other Information: PBD: 1 Jun 1997
- Country of Publication:
- United States
- Language:
- English
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