Genetic alloy design of ultra high strength stainless steels: From thermodynamics to quantum mechanics
Genetic alloy design of ultra high strength stainless steels: From thermodynamics to quantum mechanics
The design of novel ultra high strength steels for aerospace applications is subjected to stringent requirements to ensure their performance. Such requirements include the ability to withstand high loads in corrosive environments subjected to temperature variations and cyclic loading. Achieving the desired performance demands microstructural control at various scales; e.g. fine lath martensite is desired in combination with nanoprecipitate networks at specified volume fractions, and controlled concentrations of alloying elements to prevent alloy embrittlement. The design for a specified microstructure cannot be separated from the processing route required for its fabrication. Alloys displaying exceptional properties are subjected to complex interactions between microstructure and processing requirements, which can be described in terms of evolutionary principles. The present work shows how genetic alloy design principles have been utilised for designing stainless steels displaying strength exceeding that of commercial counterparts. Such designed alloys become feasible for fabrication by tailoring their microstructure employing thermodynamic and kinetic principles, while fracture toughness properties can be controlled via performing quantum mechanical cohesion energy computations.
Alloy design, Genetic algorithms, Marageing steels, Quantum mechanics, Thermodynamics
3473-3478
Rivera-Díaz-del-Castillo, P. E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Xu, Wei
d012c621-8510-4ac3-bd83-9da7515b98d2
Van Der Zwaag, Sybrand
ad11f134-8a43-4635-9feb-7c3d01158f4b
2010
Rivera-Díaz-del-Castillo, P. E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Xu, Wei
d012c621-8510-4ac3-bd83-9da7515b98d2
Van Der Zwaag, Sybrand
ad11f134-8a43-4635-9feb-7c3d01158f4b
Rivera-Díaz-del-Castillo, P. E.J., Xu, Wei and Van Der Zwaag, Sybrand
(2010)
Genetic alloy design of ultra high strength stainless steels: From thermodynamics to quantum mechanics.
Chandra, Tara, Wanderka, N., Reimers, Walter and Ionescu, M.
(eds.)
In THERMEC 2009.
vol. 638-642,
Trans Tech Publications.
.
(doi:10.4028/www.scientific.net/MSF.638-642.3473).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The design of novel ultra high strength steels for aerospace applications is subjected to stringent requirements to ensure their performance. Such requirements include the ability to withstand high loads in corrosive environments subjected to temperature variations and cyclic loading. Achieving the desired performance demands microstructural control at various scales; e.g. fine lath martensite is desired in combination with nanoprecipitate networks at specified volume fractions, and controlled concentrations of alloying elements to prevent alloy embrittlement. The design for a specified microstructure cannot be separated from the processing route required for its fabrication. Alloys displaying exceptional properties are subjected to complex interactions between microstructure and processing requirements, which can be described in terms of evolutionary principles. The present work shows how genetic alloy design principles have been utilised for designing stainless steels displaying strength exceeding that of commercial counterparts. Such designed alloys become feasible for fabrication by tailoring their microstructure employing thermodynamic and kinetic principles, while fracture toughness properties can be controlled via performing quantum mechanical cohesion energy computations.
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More information
Published date: 2010
Venue - Dates:
6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009, , Berlin, Germany, 2009-08-25 - 2009-08-29
Keywords:
Alloy design, Genetic algorithms, Marageing steels, Quantum mechanics, Thermodynamics
Identifiers
Local EPrints ID: 492958
URI: http://eprints.soton.ac.uk/id/eprint/492958
ISSN: 0255-5476
PURE UUID: e59c9dee-b0fb-4307-9778-894ccbb4dd72
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Date deposited: 21 Aug 2024 17:03
Last modified: 22 Aug 2024 02:07
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Contributors
Author:
P. E.J. Rivera-Díaz-del-Castillo
Author:
Wei Xu
Author:
Sybrand Van Der Zwaag
Editor:
Tara Chandra
Editor:
N. Wanderka
Editor:
Walter Reimers
Editor:
M. Ionescu
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