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90401 亚共晶铸铁的初奥氏体形状与强度的关系(日)/米田博幸/铸锻造热处理 1,1990 15—22 作者长期研究亚共晶铸铁的初晶奥氏体枝晶的形状与强度的关系,在成分、石墨的形状、数量以及基体组织一定的前提下,调整冷却速度,从而改变初生晶的形状。进而定量地研究初生枝晶形状、数量与机械性能的关系,结果表明:(1)随着初生枝晶的两次臂的间隔的减小,抗拉强度增加,而这种倾向随碳当量的增加而减少。当碳当量达4.0时,这种倾向几乎
90401 Relationship Between Initial Austenite Shape and Strength of Hypoeutectic Cast Iron (Japanese) / Hiromi Mita / Cast Forging Heat Treatment 1, 1990 15-22 Authors Long-term study on the shape and strength of primary austenite dendrites in hypoeutectic cast iron The relationship between the composition, the shape of the graphite, the number of matrix structure and the premise of certain, adjust the cooling rate, thereby changing the shape of the primary crystal. The results show that: (1) The tensile strength increases with the decrease of the distance between the two arms of the primary dendrite, and the tendency of the progeny with the carbon equivalent Increase and decrease. When the carbon equivalent reaches 4.0, this tendency is almost