MSSI Research Forum

Date: 2nd February 2012 to 2nd February 2012
Time:

12:00

to

13:00

Duration:

One hour

Location:

MSB-012 MSSI Building

MATERIALS & SURFACE SCIENCE INSTITUTE PRESENTATION BY Dr Jim Butler

MSSI PRESENTATION TITLE Nitinol Shape Memory Alloys Produced by Powder Metallurgy and Subsequent Hot Working

ABSTRACT Powder metallurgical (PM) processes are usually employed for the production of near-net-shape components to avoid expensive thermomechanical working and machining of the as-sintered alloy. PM is also a pioneering production route which can avoid problems caused by standard melt-based manufacturing technology, e.g. segregation. This presentation will detail PM work on making Nitinol via the UL Spark Plasma Sintering machine. It will also show some of the ways the sintered alloy is processed into a usable form, e.g. via Induction Heated Non-Conventional Isothermal Extrusion (IHNCIE). Nitinol Shape Memory Alloy has found applications in aerospace and biomedical applications. Its widespread use in the biomedical sector is mainly due to its biocompatibility in addition to its unique properties. The unique properties such as shape memory and superelasticity make NiTi an excellent candidate in many functional designs. However, the manufacturing and processing complications of this alloy pose impediments to widespread applications.

ABOUT THE PRESENTER Jim obtained his BEng in Mechanical Engineering from the University of Limerick in 2000. Since his degree he has worked as a Quality Manager and Production Manager in a Shannon based company and formed a timber harvesting company in 2004. He returned to academia at the University of Limerick in 2007 and received his MSc in Biomedical Engineering in 2008. He recently received his PhD from the University of Limerick on the melting, sintering, working and characterization of shape memory alloys. He is a co-inventor in a provisional US patent on this work and other patents are in the process of being filed. He is co-author of 4 journal papers and many conference proceedings. He has now joined the Modelling and Characterisation Group in the MSSI as a Postdoctoral Fellow working on Advanced Powder Processing Techniques, continuing in the same area of research as his PhD study.

DATE: Thursday, 2 February 2012 TIME: 12h00

VENUE: MSB-012 MSSI Building

REFRESHMENTS WILL BE PROVIDED AT 11h45

For further information, please contact: Dr Tofail Syed, Tel. No: (061) 234132 or Email: tofail.syed@ul.ie