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22.《Fe—30%Cr—2.8%C 合金定向凝固的组织和高温强度》〔日本〕T.Sutsumoto 等为说明 Fe—30%Cr—2.8%C 共晶合金用发热法实现定向凝固的技术要点,而作了一些试验。用发热法和布里曼晶体生长法制备了定向凝固试样,并对其作了高温拉伸和蠕变断裂试验。应用发热法,为防止金属液从铸型内表面开始凝固所必需的铸型最小预热温度 Tc 随铸件直径的减小而增高。
22. “Structure and High-temperature Strength of Directional Solidification of Fe-30% Cr-2.8% C Alloy” (Japan) T. Sutsumoto et al. Describes a technique for achieving directional solidification by Fe-30% Cr- 2.8% C eutectic alloy Points, and made some experiments. Directional solidification samples were prepared by heating method and Bremen crystal growth method, and high temperature tensile and creep rupture tests were carried out. Application of heat method, in order to prevent the liquid metal from the inner surface of the mold to start the minimum necessary mold preheating temperature Tc with the casting diameter decreases.