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STRENGTH-DUCTILITY AND γ'PRECIPITATES IN Ni-BASE ALLOYS

WANG Zhixing , XIE Shishu , LU Junying , WANG Lei , YANG Hongcai (Northeastern University , Shenyang , China Manuscript received 21 February 1995)

金属学报(英文版)

The critical diameter of γ'-phase(dc) is an important microstructural characteristic.Relationships among the critical diameter(dc).the volume fraciton(f),the antiphase domain boundaryγenergy(APBE) ofγ'-phase and the shear modulus(G) of precipitation strengthening Ni-base alloys have been studied in this paper.The results show that the alloys have the strongest age-hardening effects but the lowest ductility corresponding to the critical size of γ'-phase.The impact ductility of the alloys relates to γ'precipitation induced volume distortion in the matrix.

关键词: :Ni-base alloy , null , null , null

STUDY ON COMPOSITION DESIGN OF A SUPERALLOY

WANG Zhixing , XIE Shishu , YANG Hongcai , LIU ShiguiNortheastern University , Shenyang , China

金属学报(英文版)

A new superalloy without Co, Ta and Hf has been developed. The high temperature creep properties of the alloy approach to that of Mar-M246 superallov and with good antioxidation and anticorrosion abilities.

关键词: alloy design , null , null

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