Journal
SCRIPTA MATERIALIA
Volume 54, Issue 12, Pages 2179-2183Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2006.02.034
Keywords
316L and 434L stainless steel; conventional sintering; microwave sintering; densification
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This study compares the effect of heating mode on the densification, microstructure, strength and hardness of austenitic and ferritic stainless steel. The compacts were sintered in a radiatively heated (conventional) and a 2.45 GHz microwave furnace. Both 316L and 434L compacts couple with microwaves and heat up to the sintering temperature rapidly (similar to 45 degrees C/min). The overall processing time was reduced by about 90% through microwave sintering. While the microwave sintered compacts exhibit a finer microstructure, there is no corresponding improvement in densification and mechanical properties. This has been correlated with elongated and irregular pore structure. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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