کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
235372 | 465634 | 2015 | 8 صفحه PDF | دانلود رایگان |
• Composition and porosity affect phase transformation and mechanical behavior.
• Strength and hardness of sintered compacts decrease with increasing porosity.
• Work hardening rate of sintered compacts increases with increasing porosity.
• Phase transformation in porosity-free samples was simulated by JMatPro®.
• A model was formulated by combining porosity effect models with JMatPro results.
In this study, the combined effects of alloy compositions and porosity in powder metallurgy (P/M) steels on the phase transformation and mechanical properties were investigated. First, carbon steels and Astaloy CrM (Fe–3.0 wt.% Cr–0.5 wt.% Mo) steels with various porosities were produced using powder metallurgy routes, and their microstructure and mechanical properties were examined. Then, the phase transformation and resulting mechanical properties of porosity-free samples were simulated using the commercial software JMatPro® to examine the sole effect of alloy composition. By combining the porosity effect fitting models with the JMatPro results, we attempted to formulate a mathematical material model that describes the mechanical behaviors of the P/M steels.
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Journal: Powder Technology - Volume 284, November 2015, Pages 459–466