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AIST TODAYNo.19 Winter 2006 [ PDF:17.6MB ]


Development of a high strength Fe-Cr alloy without a brittle sigma phase using a novel powder method

Toshiyuki Nishio
Materials Research Institute for Sustainable Development
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Fe-48at%Cr alloy has been synthesized using mechanical alloying (MA) of Fe and Cr powder and consolidated using pulsed current sintering (PCS). The obtained Fe-48at%Cr alloy has consisted of fine grains without a brittle sigma phase, which precipitated inevitably in Fe-48at%Cr cast alloy. Fe-48at%Cr alloy fabricated by the newly proposed process (MA-PCS) has showed a high strength of over 1GPa and a high elongation more 10% at room temperature.

Figure
Figure
Figure: Effect of milling time on mechanical properties of Fe-48at%Cr compacts.

Relational Information

AIST TODAY Vol.5 , No.10 (2005) p.24-25



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