材料期刊网

FATIGUE CRACK PROPAGATION OF Ni-BASE SUPERALLOYS

X.B.Liu , L.Z.Ma , K.M.Chang , E.Barbero

金属学报(英文版)

Time-dependent Fatigue Crack Propagation (FCP) behaviors of five Ni-base superalloys were investigated at various temperatures under fatigue with various holding times and sustained loading conditions. The new concept of damage zone is defined and employed to evaluate the alloys' resistance to hold-...

关键词: Ni-base superalloys , null , null

Weakening Mechanisms of Platelike σ Phase on Ni-base Superalloys

LIU Yuesheng ZHAO Xianguo LIU Zhizhong XIE Xishan Beijing Institute of Aeronautical Materials , 100095 , China. University of Science and Technology Beijing , 100083 , China.To whom correspondence should be addressed.

材料科学技术（英文）

On the basis of an investigation on σ phase in Ni-base cast superalloy K24 and the results about σ phase in other Ni-base superalloys,an embrittl- ing mechanism and a softening mechanism,by which platelike σ phase weakens the Ni-base superalloys,have been proposed.It is considered that the platelike...

关键词: Ni-base superalloys , null , null

FATIGUE CRACK PROPAGATION OF Ni-BASE SUPERALLOYS

金属学报(英文版)

关键词:

基于团簇结构模型的镍基高温合金成分设计

于晶晶 , 王清 , 李晓娜 , 石尧 , 董闯 , 冀春俊 , 徐香明

材料热处理学报

应用“团簇加连接原子”结构模型对镍基高温合金成分进行了解析,指出了这些合金均源自基础团簇式[Cr-Ni12]Cr3,其中[Cr-Ni12]为在FCC结构中以Cr为心的立方八面体团簇,搭配以3个Cr作为连接原子.根据合金化组元与基体Ni的混合焓大小确定其在团簇式中的位置,最终形成多元合金化后的团簇式[...

关键词: 镍基高温合金 , γ '析出相 , "团簇加连接原子"模型