October 2014

Friction Technology for Processing of Advanced Materials: Challenges and Opportunities (WPI Only)
Friday, 10/3/2014 1:00 PM-2:00 PM
Salisbury Laboratories, SL 104 - Free
Presentation by: Stan David, Corporate Fellow Emeritus, Oak Ridge National Laboratory

Friction technology embraces a growing range of variants for both joining and materials processing. Friction stir processing (FSP) is an innovative solid state process that utilizes frictional heat combined with forging pressure to cause extensive deformation that softens the material. Friction stir welding (FSW) is a solid state process that can be used for welding. Some of the friction processing techniques developed and invented at The Welding Institute (TWI) includes not only FSW but also friction surfacing, friction extrusion and rotary friction welding. Of these various processes the process that has gained the most attention is FSW. The principles of the process can also be used to modify the microstructure and produce nano structured materials.
The presentation will describe the development of FSW and its applications with examples, to join low temperature materials, advanced materials, and surface modification to improve mechanical properties of casting. Also the presentation describes the extension of the process to produce nano structured materials and extrusion of aluminum alloys. Finally, the presentation points out some of the opportunities and challenges for further advancement of the science and technology of FSP.

Sponsored by: WPI Materials Science & Engineering
For more information, e-mail mtereq@wpi.edu or call 508-831-5633.

High Temperature Materials for Harsh Environments from Aerospace Thermal Protection Systems to Advanced Industrial and Energy Applications (WPI Only)
Wednesday, 10/8/2014 12:00 PM-1:00 PM
Washburn Shops & Stoddard Laboratories, WB 229 - Free
Presentation by: Dr. Jorge Barcena, Tecnalia Research & Innovation, Industry and Transport Division

Applications on extreme conditions demand the use of high temperature materials, where the performance of other class of material is not enough to withstand the high requirements and constraints. The most driving application for such materials comes from the Aerospace sector, where a vehicle or capsule that enter into a planetary atmosphere (e.g. the Earth) require the use of a thermal protection system (TPS) to shield them from aerodynamic heating. Otherwise the substructure or payloads of the vehicles would be damaged during the return from outer space or during cruise at hypersonic speed. This lecture gives an overview of the past and novel state-of-the-art materials for these extreme conditions (advanced alloys, ceramic matrix composites, ultrahigh temperature ceramics) and their envisaged aerospace applications (vehicles, mission, projects, roadmaps). Current and future uses on non-space applications will be depicted such as on automotive, nuclear and solar energy.
Sponsored by: Materials Science & Engineering
For more information, e-mail mtereq@wpi.edu or call 508-831-5633.

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