A low carbon Ti-microalloyed chemistry was selected for the development of family of cold-rolled and batch-annealed high-strength high-formable steels through EAF-LMF-CSP route. A clean steel practice combined with a suitable choice of hot rolling and batch annealing practice were optimized to retain precipitate strengthening in the final fully processed steel and microstructural attributes that resulted in superior forming characteristics. The enhanced balance of strength and formability (hole expansion ratio values of 70-100% for thicknesses of 0.80-1.20 mm and tensile strength ranging from 571-709 MPa) attributed to the optimization of the microstructure through controlled recrystallization and grain growth. In this article, production strategy and formability characterization of high-strength low-alloy steels with minimum yield strength of 490 MPa will be discussed, and results will be presented.
A low-carbon Ti-microalloyed chemistry was selected for the development of family of cold-rolled and batch-annealed high-strength high-formable steels. A clean steel practice combined with a suitable choice of hot rolling and batch annealing practice were optimized to retain precipitate strengthening in the final fully processed steel and microstructural attributes that resulted in superior forming characteristics. In this paper, production strategy and advanced material characterization of high-strength, low-alloy steels with minimum yield strength of 490 MPa will be discussed,
Formed in January 2004 from the merger of the Iron & Steel Society and the Association of Iron and Steel Engineers, AIST is proud to be the #1 source for all your steel-related needs. We encourage you to explore all that we have to offer. From technology-based Operating Committees to our local Member Chapers, the opportunities to network with others and expand your technical know-how abound. Each year we offer two major conventions along with many specialty conferences that will help you get the most out of your membership.
Formed in January 2004 from the merger of the Iron & Steel Society and the Association of Iron and Steel Engineers, AIST is proud to be the #1 source for all your steel-related needs. We encourage you to explore all that we have to offer. From technology-based Operating Committees to our local Member Chapers, the opportunities to network with others and expand your technical know-how abound. Each year we offer two major conventions along with many specialty conferences that will help you get the most out of your membership.
