STUDY ON THE REFINEMENT OF THE RECRYSTALLIZED GRAIN SIZE OF 3S ALLOY (PART 2) Influence of variables on ingot grain size and recrystallized grain size

• Published in: Journal of Japan Institute of Light Metals Vol. 1953; no. 8; pp. 29 - 33
• Main Authors: SHIMIZU, KYOJI, NAKATANI, YOSHIZO, TAKEGAMI, YOSHIAKI
• Format: Journal Article
• Language: Japanese
• Published: The Japan Institute of Light Metals 31.08.1953
• ISSN: 0451-5994; 1880-8018
• DOI: 10.2464/jilm.1953.8_29

Concerning the refinement of the recrystallized grain size of 3S alloy sheet, the influences of variables, that is, Mn content, casting temperature, mould temperature, and addition elements on the ingot grain size of Al-Mn alloy have been studied. Minimum grain size, in case of the ingot size 20 × 20 × 65m/m3 was attained at the following Condition; Casting temperature mould temperature Al(99.7%) 700°C 250°C Al-Mn(0.3%) 700 150 Al-Mn(0.7%) 700 100 Al-Mn(1.2%) 700 50 Moreover, 3S (1.2%Mn) added individually Fe, Si, Cu, Cr, or Ti up to 0.5% was rolled with cold reduction 95% and then annealed at 400-600°C for 2hrs. Influence of the above elements on the 3S ingot grain size and recrystallized grain size was summarized as follows; ingot grain size recryst grain size refining Ti→Fe→Si Fe→Si→Cr sup. inf. neutral Cu Cu coarsening Cr Ti