Sintered 434L ferritic stainless steel-Al2O3 particulate composites containing phosphorus |
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Authors: | S.K. Mukherjee G.S. Upadhyaya |
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Affiliation: | the Department of Metallurgical Engineerin, Indian Institute of Technology, Kanpur, 208016, India |
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Abstract: | Sintering of 434£ ferritic stainless steel powder compacts containing 0-8 volume %cx-AI20 a (1 J.1m size) and 0-4 weight % phosphorus in the form of either FesP or Fe2P was carried out in the temperature range 1150°C-1300°C, and the resultant densification parameters, ultimate compressive strengths and hardnesses were measured. The results reveal that temperatures of 1150°C and 1200°C produced liquid-phase sintering when phosphorus was added in the form of FeaP. With Fe2P additions, a higher sintering temperature of 1300°C densified the composites, and an increase in the phosphorus content to 3% uniformly enhanced the sintered properties: The presence of Al20 a particles at an optimum level only improved the properties of the liquid-phase sintered composites. |
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Keywords: | composite materials powder metallurgy sintering ferritic stainless steel |
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