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INFLUENCE OF ASSOCIATED AND SEPARATE PRECIPITATION OF γ″ AND γ′ ON STRUCTURE STABILITY IN INCONEL718 AND MODIFIED ALLOYS

DONG jianxin XIE Xishan ZHANG Shouhua University of Science and Technology Beijing , Beijing , China doctorate student , Department of Materials Science and Engineering , University of Science and Technology Beijing , Beijing 100083 , China

金属学报(英文版)

The precipitation behavior in Inconel 718 and modified alloys has been studied by means of TEM.The structure of associated precipitation and compact morphology of γ″+γ′ were ob- tained by modifying the contents of Al,Ti and Nb.Experimental results show that the com- pact morphology of γ″+γ′ has the ...

关键词: superalloy , null , null , null , null

FRACTAL ANALYSIS OF FRACTURE SURFACE OF WELDED JOINT UNDER LOW CYCLE FATIGUE

NI Yushan CHENG Guangxu KUANG Zhenbang Xi'an Jiaotong University , China doctorate student , Institute of Engineering Mechanics , Xi'an Jiaotong University , Xi'an 710049 , China

金属学报(英文版)

Hausdorff dimension of fracture surface roughness of welded joint,both welding metal and heat-affected zone.of pressure vessel steel 16MnR,tested under strain-controlled low-cycle fatigue,was examined with computer vision srstem and by two-dimensional variation method. Results show that it decreases...

关键词: welded joint , null , null , null

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