美国材料基因组计划(英文)

Aging
Thermodynamics
Microstructure
Eutectic Phases
Texture/ Grain Structure
Precipitation
Properties
Ductility Yield Strength/ Stress Strain ?? Low Cycle Fatigue Corrosion
An Evolving MGI/ICME Framework*
Founda9onal Engineering Problem 1
Integra9on PlaAorms
பைடு நூலகம்
FEP 2 FEP 3 FEP 4
Chemistry Thermodynamics Diffusion
Manufacturing Process Simulation
Quantitative ProcessingStructure Relations
Quantitative StructureProperty Relations
Constitutive Models
* with apologies to Chuck Ward, Paul Ret etal, US Air Force Materials Lab
An Evolving MGI/ICME Framework
Pervasive Tools for Characteriza&on & Modeling
• Overview of Lightweight Structural Materials Area • What can the MGI Approach do to transform this area?
Lightweight Structural Materials
• Metals: Titanium, Aluminum, Magnesium • Polymers & Polymer Matrix Composites • Essential for reducing weight of vehicles, powertrains, powerplants, etc.
Ti Forgings for Defense & Transp Mg Die Cas9ngs for Transp & Defense
Educa&on
Polymer Composites for Power & Transp
* NAE ICME Report, 2008
Materials represents a different class of computational problem
• Materials response and behavior involve a multitude of physical phenomena with no single overarching modeling approach. • Capturing the essence of a material requires integration of a wide range of modeling approaches dealing with separate and often competing mechanisms and a wider range of length and time scales. • There are over 160,000 engineering materials!
Aluminum Sheet Foundational Engineering Problem Structure-Property Linkages Processing
Chemistry Slab/Sheet Casting Rolling Forming
Heat Treatment
n
Soltn Trt
13
When MGI is successful:
"
• We will have reduced the materials development cycle from today’s 10- to 20-year time frame by at least 50%.! • A broad spectrum of scientists, engineers, and manufacturers—will have open access to a curated Materials Information Infrastructure including libraries of databases, tools, and models, ! • Discoveries will be easier and faster – and our science more comprehensive and rapidly inserted into the engineering process.! • Graduating MSE students (and Mechanical / Aeronautical Eng) students will be employed and operate in a multidisciplinary and computationally rich engineering environment.!
Al Alloy - Casting Simulation Pore Size Distribution HCF Strength Distribution Component Durability (FEA)
• Process & product optimization • Innovation
* Updated from T. Pollock, UCSB, 2010
Materials Genome Initiative
. . . This initiative offers a unique opportunity for the United States to discover, develop, manufacture, and deploy advanced materials at least twice as fast as possible today, at a fraction of the cost.
Materials Genome Initiative Light Weight Structural Materials Session
John Allison
The University of Michigan May 15, 2012 NIST/OSTP MGI Workshop
Charge From The Workshop Organizer (Jim Warren)
Aluminum Sheet for Auto & Aerospace
The Vision
Computationally-driven materials development is a core activity of materials professionals in the upcoming decades, uniting materials science with materials engineering and integrating materials more holistically and computationally with product development.
President Barack Obama, 24 June 2011 Announcing the Materials Genome Initiative
“(In this context) genome connotes a fundamental building block toward a larger purpose” NSTC MGI White Paper, 2011
ICME is an Essential Ingredient of MGI
Integrated Computational Materials Engineering (ICME) is the integration of materials information, captured in computational tools, with engineering product performance analysis and manufacturing-process simulation.*
Model “Industrializa&on”
Informa&on Infrastructure (Data Standards & Structures)
Valida&on & Uncertainty
High Cycle Fatigue
Low Cycle Fatigue
Yield Strength
Thermal Growth
Integration of knowledge is essential to MGI
ICME Foundational Engineering Problems Include a manufacturing process(es), a materials system and an application or set of applications that define the critical set of materials properties and geometries
Processing
Casting Chemistry Thermodynamics Heat Treatment Solution Treatment n Aging
Microstructure
Micro porosity
Eutectic Phases
Precipitation
Properties
How Much Do We Know?*
Google Scholar - Articles and Patents Ø Carbon Fiber Composites 398,000 Ø Mg alloys 518,000 Ø Ti alloys 935,000 Ø Al alloys 1,300,000 Ø Steel 3,350,000 Ø We have accumulated ≈10-20% of the knowledge required to use C-Fiber Composites and Mg alloys as effectively as steel
Engineering Product Performance Analysis
• Process & product optimization • Innovation
* NAE ICME Report, 2008
ICME is an Essential Ingredient of MGI
Integrated Computational Materials Engineering (ICME) is the integration of materials information, captured in computational tools, with engineering product performance analysis and manufacturing-process simulation.*
• Examples of FEPs
! ! Ø Lightweight, blast resistant forged titanium structures ! Ø Rolled magnesium sheet for crash resistant automotive ! structures ! Ø Low Cost C-Fiber Composites for aerospace ! • Prioritize modeling, experimental, data issues to be tackled ! • Provide a framework for assembly! of multidisciplinary teams ! • Provide near-term payoff (and thus increased buy-in & investment) ! • Serve as the foundation for this emerging discipline !