Evaluation of Characteristics of Non-Metallic Inclusions in P/M Ni-Base Superalloy by Automatic Image Analysis

Non-metallic inclusions,especially the large ones,within P/M Ni-base superalloy have a major influence on fatigue characteristics,but are not directly measurable by routine inspection.In this paper,a method,automatic image analysis,is proposed for estimation of the content,size and amount of non-metallic inclusions in superalloy.The methodology for the practical application of this method is described and the factors affecting the precision of the estimation are discussed.In the experiment,the characteristics of the non-metallic inclusions in Ni-base P/M superalloy are analyzed.

作 者： Li Xinggang Ge Changchun Shen Weiping   作者單位： Institute of Special Ceramics and Powder Metallurgy,University of Science and Technology Beijing  刊 名： 航空制造技術(shù)  ISTIC 英文刊名： AERONAUTICAL MANUFACTURING TECHNOLOGY  年，卷(期)： 2007 ""(z1)  分類號(hào)： V2  關(guān)鍵詞： Non-metallic inclusions Automatic image analysis Stereology Ni-base superalloy  

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