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Trans. Nonferrous Met. Soc. China 26(2016) 2567-2585 Influence of welding parameters on fracture toughness and fatigue crack growth rate in friction stir welded nugget of 2024-T351 aluminum alloy... and fatigue behaviors of the welds which have the initial crack in the nugget zone and the crack orientation along the welding direction, were studied based on standard test methods. Fracture behavior......
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Nonlinear ultrasonic characterizing online fatigue damage and in situ microscopic observation WU Bin1, YAN Bing-sheng1, 2, HE Cun-fu1 1. College of Mechanical Engineering and Applied Electronics...; accepted 16 May 2011 Abstract: A robust experimental procedure was developed, by which the evolution of fatigue damage in AZ31 magnesium alloy was tracked online with the ultrasonic nonlinearity......
sheet/powders precursor. Bending fatigue test results showed that the bonding force of the foamed sandwich interface is very high, in fatigue test fracture occurred in the whole foam aluminum sandwich...Study on the Interface Bonding and Bending Fatigue Properties of Aluminum Alloy Foam Sandwich () 摘要:Foam materials have many attractive properties because of their low-weight and cell structure......
alloys [32]. Linear-elastic fracture mechanics (LEFM) and non-linear fracture mechanics were employed to explain the fatigue cracking behaviors of cast Al alloys. LEFM assumes that material.... And the fracture mechanics of low-cycle fatigue (LCF) should be explained by non-linear fracture mechanics as it noted above. The fatigue life could be expressed by Coffin-Manson relation [23, 41]: ......
Low-cycle Fatigue Behaviors of an As-extruded Mg-12%Gd-3%Y-0.5%Zr AlloyS.M.Yin1,S.X.Li21. Shenyang University of Chemical Technology2. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences摘 要:<正>Cyclic deformation and fatigue behaviors of Mg-12%Gd-3%Y-0.5%Zr(wt%,GW123K) alloy were investigated......
and coalescence in the Si clusters. Key words: cast metal matrix composites; fatigue crack growth; stress intensity factor ; fracture 1 Introduction Discontinuously reinforced metal matrix composites... is controlled by debonding of the interface as well as whisker fracture followed by striation formation and void nucleation in the Al matrix. Fig. 7 Fatigue crack growth in MMC with Al2O3 whisker Fig......
A GENERAL CONSTITUTIVE RELATION FOR FATIGUE CRACK GROWTH ANALYSIS OF METAL STRUCTURES W.C.Cui1,X.P.Huang1 (1.School of Naval Architecture & Ocean Engineering, Shanghai Jiaotong University, Shanghai 200030, China) Abstract:Crack growth rate curves are the fundamental material property for metal structures under fatigue loading. Although there are many crack growth rate curves available......
to the existence of prior particle boundary (PPB) in P/M superalloys. The inter-particle rupture morphological characterization and type on low cycle fatigue (LCF) fracture of a nickel-based P/M superalloys... serious inter-particle fractures affects fatigue lives more. Key words: P/M superalloy; prior particle boundary; inter-particle rupture; low cycle fatigue fracture 基金项目:国家重点基础研究发展计划资助项目(2010CB631204)；中俄政府间......
