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Tensile Fracture Mechanism of Claviform Hybrid Composite Rebar蔡禄荣School of Civil Engineering and Transportation, South China University of Technology摘 要:Based on the shear-lag theory, a hexagonal model of fiber bundles was established to study the tensile fracture mechanism of a claviform hybrid composite rebar. Firstly, the stress redistributions......
closed-cell aluminum foam was studied and the influence of relative densities on the tensile strength and elastic modulus was also researched. The results show that the fracture surfaces of Al-Si closed-cell aluminum foam display quasi-cleavage fracture consisting of brittle cleavages and ductile dimples. The tensile strength and elastic modulus are strictly affected by the relative density of Al......
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In-situ Observation of Tensile Fracture in A357 Casting AlloysZhongwei Chen,Xiaolei Hao,Yu Wang,Kai ZhaoState Key Laboratory of Solidification Processing,Northwestern Polytechnical University摘 要:The mechanism of damage evolution and fracture in A357 casting alloys was investigated by in-situ scanning electron microscopy(SEM) tensile testing.Different......
J. Cent. South Univ. (2017) 24: 1647-1653 DOI: 10.1007/s11771-017-3570-1 Effect of water absorption ratio on tensile strength of red sandstone and morphological analysis of fracture surfaces WANG... to be addressed is the morphology of the fracture surfaces. It is generally accepted that the failure of brittle rock initiates from the tips of cracks because of tensile strength [3-5]. Moreover, crack......
fracture occurs in peak-aged condition. Key words: Mg-Gd-Y-Zr alloy; second phases; microstructure; fracture; tensile properties 1 Introduction Lightweight magnesium alloys have attracted increasing... the aggregation and combination of microvoids, the alloy is ruptured Fig.3 Tensile properties for as-extruded alloy and alloy aged at 498 K for 12 h and RT Fig.4 SEM images of fracture surfaces((a), (c......
Effects of plastic deformation on precipitation behavior and tensile fracture behavior of Mg-Gd-Y-Zr alloy LIN Dan1, WANG Lei1, LIU Yang1, CUI Jian-zhong2, LE Qi-chi2 1. Key Laboratory..., Northeastern University, Shenyang 110004, China Received 30 October 2010; accepted 27 May 2011 Abstract: The effects of plastic deformation on precipitation behavior and tensile fracture behavior......
calculation of the strain hardening exponent (n) for TiC/AZ91D composites indicates that the n value ranges from 0.71 to 0.82 when tensile deformation was carried out at 423-723 K and shows fracture...; TiC/AZ91D; in situ reactive infiltration; tensile deformation; strain hardening; fracture mechanism1 Introduction Relative to aluminum matrix composites, magnesium-matrix composites are receiving......
tensile fracture surfaces of TiB2p/ Fig.8 Tensile fractographs of TiB2p/6061Al composites before and after extrusion: (a) 14%TiB2p/6061Al; (b) 20% TiB2p/6061Al 6061Al composites with different volume fractions of TiB2 after T6 treatment. The fractographs show good plastic deformation characteristic. There are a lot of dimple and tearing edge on tensile fracture surfaces. Some TiB2 particles......
Fracture strength of centre surface cracked tensile specimens made of 2219-T87 Al alloy welding S. RAJAKUMAR1, T. CHRISTOPHER2 1. Thanthai Periyar Government Institute of Technology, Vellore-632002... surface cracked tensile plates made of 2219-T87 Al alloy at cryogenic temperatures were correlated using a modified inherent flaw model. Fracture parameters to generate the failure assessment diagram......