Abstract
1. It is shown that the structural factor exerts a marked influence on the properties of porous stainless steel. 2. Accelerated cooling of ferritic-martensitic steel Kh17N2 and ferritic steel Kh30 after sintering, combined with additional heat treatment, produces a substantial increase of strength and corrosion resistance compared with the industrial heat treatment process employed for these steels (slow cooling with the muffle after sintering). Accelerated cooling of these steels from the sintering temperature also markedly increases their strength and corrosion resistance. 3. It has been established that, unlike cast stainless steels, which soften after homogenizing, porous sintered austenitic steels OKh18N9 and Kh23N18 show a significant strength increase after such heat treatment. 4. Accelerated cooling from the sintering temperature substantially increases the strength and corrosion resistance of austenitic steels OKh18N9 and Kh23N18 compared with slow cooling with the muffle after sintering.
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