高圧下で凝固したAl-4.5%Cu合金のマクロ偏析に及ぼす加圧凝固条件の影響
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Al-4.5%Cu alloy ingots were produced under different levels of such variables as keeping time under the pressure, delay time for pressurization, applied pressure, pouring temperature, mold temperature and height/diameter ratio (H/D). The macrostructure and macrosegregation were measured on the longitudinal section. Macrosegregation is almost independent of the keeping time, delay time for pressurization and applied pressure. Pouring at high temperatures, mold preheating at high temperatures and the use of a small height/diameter ratio (H/D) are preferable to moderate macrosegregation. The segregation is greatly affected by liquid feeding compensating solidification shrinkage. Channel type segregation is often produced along the path of liquid feeding.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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