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Neu,
Richard W.
Neu,
Richard W.
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ItemCommunicating Materials Systems Knowledge through Processing-Structure-Properties-Performance (PSPP) Maps( 2018-01) Goulding, Ashley N. ; Leung, Jonathan F.W. ; Neu, Richard W.Knowledge about the behavior of a specific materials system is concisely summarized in a Processing-Structure-Properties-Performance (PSPP) map. This is a useful tool that can effectively serve as a standard method of communication regarding the physical and chemical mechanisms that control the performance of a materials system, and gives guidance on the type of data required to accurately characterize that materials system in its entirety. This article describes a workflow to generate a map for any materials system, and then applies these steps to develop a map for Ni-base superalloy synthesized by additive manufacturing.
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ItemThe Development of a Process-Structure-Properties-Performance (PSPP) Map for Aluminum-Zinc-Magnesium-Copper Alloys Used in Aircraft Applications(ASM International, 2016-04) Goulding, Ashley N. ; Neu, Richard W. ; Sanders, T.H. JrIn 2011, the White House announced the Materials Genome Initiative, which aims to cut down the cost and time required to discover, develop, and optimize a material and deploy it in a commercial system. One method of achieving this is by integrating experimental test methods, computational tools, and known knowledge databases. While the potential for computational models to speed and assist process-structure-property optimization is not a new concept, one of the key issues in the implementation of models in this space is the lack of a standard method of communication regarding the physical and chemical mechanisms that drive a materials system, and the amount and type of data required to accurately characterize that materials system in its entirety. This work focuses on developing process-structure-property-performance (PSPP) maps as this missing standard communication method. Here we detail the steps that should be taken to generate a map for any system, and then briefly discuss how those steps were applied to high-strength Al-Zn-Mg- Cu alloys. These alloys are highly utilized in aircraft applications and are extremely complicated and commercially viable materials which are repeatedly subject to re-optimization, and are thus a good example of the value of these maps and how they can be used.
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ItemPerformance and Characterization of TWIP Steels for Automotive Applications(ASTM International, 2013-08) Neu, Richard W.This article reviews the current state of the art in understanding TWinning--‐ Induced Plasticity (TWIP) steels with an emphasis on linking microstructure to the mechanical behavior through microstructure--‐aware constitutive models. A materials selection exercise is conducted to substantiate that TWIP steels are more desirable than most other materials for structural and safety components of automobiles. Gaps in the knowledge of TWIP steels that are hindering adoption for automotive applications are identified. This review concludes by suggesting fundamental research needs to promote the design of TWIP steels with improved properties and performance for structural components in automotive applications.
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ItemUltralight-but-robust automotive vehicle with strong, lightweight, next-generation material(Georgia Institute of Technology, 2011-05-31) Choi, Seung-kyum ; Rosen, David W. ; Neu, Richard W.