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凝固速率对定向凝固合金DZ22显微组织的影响
引用本文:刘忠元,史正兴,佘力,陈荣章,王罗宝,顾林喻.凝固速率对定向凝固合金DZ22显微组织的影响[J].航空学报,1995,16(3):80-84.
作者姓名:刘忠元  史正兴  佘力  陈荣章  王罗宝  顾林喻
作者单位:西北工业大学403教研室,北京航空材料研究所,西安工业学院
摘    要: γ+γ′共晶为群块状或块状,分布于晶界和枝晶间;MC型碳化物呈小块状,也分布于晶界和枝晶间。

关 键 词:铸造  耐热合金  冷却  速率  结晶  结构  分析  

EFFECT OF SOLIDIFICATION RATE ON MICROSTRUCTURES OF DIRECTIONALLY SOLIDIFIED SUPERALLOY DZ22
Liu Zhongyuan,Shi Zhengxing.EFFECT OF SOLIDIFICATION RATE ON MICROSTRUCTURES OF DIRECTIONALLY SOLIDIFIED SUPERALLOY DZ22[J].Acta Aeronautica et Astronautica Sinica,1995,16(3):80-84.
Authors:Liu Zhongyuan  Shi Zhengxing
Institution:1. Faculty 403 of Northwestern Polytechnical University, Xi'an, 710072;2. Beijing Institute of Aeronautical Materials, Beijing, 100095;3. Xi'an Institute of Technology, Xi'an,71
Abstract:The effect of solidification r ate on the microstructures of directionally solidified superalloyDZ22 is studied wit h the help of ZMLMC directional solidification equipment which has a super hightemperatur e gradient . The r esults show that the size and shapes of Cc , (C+ Cc) and MC change ser i2ously with the increase in cooling r ate. When t he cooling rate is equal to 54. 2K# s- 1, Cc particles dis2tribute evenly; bot h eutect ic (C+ Cc) in group block and MC in block distr ibute in interdentr itic zone.
Keywords:casting  heat resistant alloys  cooling  rates  crystallization  structures  analyzing
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