THE COMPOSITION AND TEMPERATURE EFFECTS ON THE ULTRA HIGH STRENGTH STAINLESS STEEL DESIGN
Alloy composition and heat treatment are of paramount importance to determining alloy properties. Their control is of great importance for new alloy design and industrial fabrication control. A base alloy utilizing MX carbide is designed through a theory guided computational approach coupling a genetic algorithm with optimization criteria based on thermodynamic, kinetic and mechanical principles. The combined effects of 11 alloying elements (Al, C, Co, Cr, Cu, Mo, Nb, Ni, Si, Ti and V) are investigated in terms of the composition optimization criteria: the martensite start (Ms) temperature, the suppression of undesirable phases, the Cr concentration in the matrix and the potency of the precipitation strengthening contribution. The results show the concentration sensitivities of each component and also point out new potential composition domains for further strength increase. The aging temperature effect is studied and the aging temperature industrially followed is recovered.
Alloy design precipitate composition effect temperature effect genetic algorithm
W.XU P.E.J.RIVERA DIAZ DEL CASTILLO S.VAN DER ZWAAG
Materials Innovation Institute, the Netherlands.Kluyverweg 1, 2629 HS, Delft, the Netherlands Fundamentals of Advanced Materials Group, Faculty of Aerospace Engineering, Delft University of Tech
国际会议
第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)
哈尔滨
英文
1060-1065
2008-09-03（万方平台首次上网日期，不代表论文的发表时间）