TY - GEN
T1 - A combined experimental-computational approach to design optimization of high temperature alloys
AU - Jha, Rajesh
AU - Dulikravich, George S.
AU - Pettersson, Frank
AU - Saxén, Henrik
AU - Chakraborti, Nirupam
PY - 2017
Y1 - 2017
N2 - Experimental data were used to develop metamodels to predict high temperature alloy chemistry trends influencing stress-to-rupture and time-to-rupture of Nickel based superalloys. Chemistry optimization utilized evolutionary neural networks, bi-objective genetic programming and pruning algorithm. Optimization results were compared with the experimental data and IOSO optimization algorithm. Response surfaces were developed through various modules available in a commercial optimization package. Pareto optimized chemistries were tested using thermodynamic database, FactSageTM, by studying the phase distribution as a function of temperature of manufacture and exposure. Uniformity in the amount of critical phases over 0-1200 0C range confirmed high temperature stability for optimized alloys.
AB - Experimental data were used to develop metamodels to predict high temperature alloy chemistry trends influencing stress-to-rupture and time-to-rupture of Nickel based superalloys. Chemistry optimization utilized evolutionary neural networks, bi-objective genetic programming and pruning algorithm. Optimization results were compared with the experimental data and IOSO optimization algorithm. Response surfaces were developed through various modules available in a commercial optimization package. Pareto optimized chemistries were tested using thermodynamic database, FactSageTM, by studying the phase distribution as a function of temperature of manufacture and exposure. Uniformity in the amount of critical phases over 0-1200 0C range confirmed high temperature stability for optimized alloys.
UR - http://www.scopus.com/inward/record.url?scp=84968833333&partnerID=8YFLogxK
U2 - 10.1115/ETAM2014-1008
DO - 10.1115/ETAM2014-1008
M3 - Conference contribution
AN - SCOPUS:84968833333
T3 - ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, ETAM 2014
BT - ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, ETAM 2014
PB - American Society of Mechanical Engineers
T2 - ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries, ETAM 2014
Y2 - 25 March 2014 through 27 March 2014
ER -