17%Cr ステンレス薄鋼板の機械的性質に及ぼす熱延巻取温度の影響

概要

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Effect of coiling temperature on the mechanical properties of 17%Cr stainless steel sheet containing 0.124%Al(A) and 0.013%Al(B) has been investigated. The yield stress and yield point elongation of the specimen A initially incerase and then decrease with increasing final annealing time when processed with coiling temperature lower than 750℃ and without annealing before cold rolling. This is due to decomposition of α´ during initial stage of annealing and subsequent precipitation of AlN. The yield stress and yield point elongation of the specimen A coiled at 850℃ are low and remain almost the same with increasing final annealing time as no α´ is present before cold rolling and AlN phase has been precipitated at coiling stage. In the case of specimen B, the yield stress and yield point elongation increase with increasing final annealing fime when processed with coiling temperature lower than 750℃ and without annealing before cold rolling. This is due to the decomposition of α´ during initial stage of annealing and no preciptation of AlN during final annealing.
社団法人日本鉄鋼協会の論文
1990-09-01