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1·The effects of heat treatment and cryogenic treatment on dimensional stability of al alloy 2a11 were studied using a box-type electrical resistance furnace and a cryogenic box with program control.

利用箱式电阻炉、自行研制的高精度程序控制深冷箱对比，研究了热处理工艺和深冷处理工艺对2a11铝合金样品尺寸稳定性的影响。