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How can computational simulation and modeling be used to create lead-free alloys?
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Transcript of How can computational simulation and modeling be used to create lead-free alloys?
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How can computational simulation and modeling be used to create lead-free alloys?
Tameka WhitneyW.W. Samuell HS, Dallas ISD
Faculty Mentor: Raymundo Arroyave, Ph.D.Assistant Professor, Department of Mechanical Engineering
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Meet Dr. Raymundo Arroyave• Assistant Professor in the Department of
Mechanical Engineering at Texas A & M University; joined the A&M faculty in 2006.
• Ph.D. in Materials Science from the Massachusetts Institute of Technology (MIT)
• Postdoctoral Scholar in the Department of Materials Science and Engineering at Pennsylvania State University
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Computational Materials Science
Its objective is to develop theories and methods to simulate the
behavior of materials across time and length scales.
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Computational Materials Science CMS practitioners use different
computational simulation tools that model the behavior of materials at the macro-level.
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Why is CMS important?• Provides the “recipe” for creating a
substance without using experimentation• Simulate structural, mechanical
& thermal properties
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Dr. Arroyave’s Lab… Focuses on developing models,
predicting material properties and assisting materials design using computer simulation and modeling software
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Soldering
Use of metal
alloys in order to join 2 or more components
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Soldering• Majority of solders have been lead-
tin alloys• Reliable• Inexpensive• Relatively low melting
temperatures
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Lead-Free Soldering
Uses copper-tin alloy instead of the typical tin-lead solder
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Why is it important?
• Concern about environmental impact of discarded lead-containing products• leak into
groundwater from landfills• pollutes air if
incinerated
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Where do I fit in?• My role is to generate data on
copper-tin based alloys that may be used in the soldering process• Structural properties
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In a nutshell….• Materials Science studies the
relationship between the structure of a substance and its properties.
• Because of increased controls and legislation on the use of lead, lead-free alloys must be developed to be used in the soldering process.
• Besides Dr. Arroyave’s group, only 2 other groups in the US are researching lead-free alloys.
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How can I use this in my classroom?
• Have students create a crystal of Cu3Sn using provided materials
• Types of bonding found in crystals (metallic, ionic) and the properties that result
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Special Thanks
• E3 Team• Dr. Raymundo Arroyave• Min Soo Park • Colton Shannon • National Science Foundation (NSF) • Nuclear Power Institute (NPI)• Texas Workforce Commission (TWC)• Chevron