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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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电磁搅拌对半固态az91d镁合金组织的影响
Keywords: 金属材料,az91d镁合金,半固态,电磁搅拌
Abstract:
？研究了电磁搅拌参数对连续冷却条件下az91d镁合金组织的影响.结果表明:当电磁搅拌的频率达到或高于50hz时,半固态az91d镁合金浆料或坯料组织中的球状初生固相越来越多,越来越圆整;在电磁搅拌频率为200hz和冷却速率较低的条件下,搅拌的功率越大,半固态az91d镁合金组织中的球状初生固相越多,晶粒也越细小.在电磁搅拌条件下,az91d镁合金熔体的激烈流动导致较为均匀的温度场和溶质场、更加剧烈的温度起伏,促进了半固态az91d镁合金球状组织的形成.半固态重熔加热使半固态az91d镁合金坯料初生固相的形态发生进一步的球化.
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