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通过高温均匀化试验， 用金相法探讨不同的均热温度对 Ｌｙ１２ 板锭塑性的影响；不同的冷却方式改善 Ｌｙ１２ 板锭的微组织和工艺塑性。
Through high-temperature homogenization test, the effect of different soaking temperature on the plasticity of Ly12 ingot was investigated by metallographic method. The microstructure and plasticity of Ly12 ingot were improved by different cooling methods.