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Effect of Ni-Ti filler on brazed W-Cu/18-8 joints
10.1016/j.jmatprotec.2018.04.018 2018-04-11 W-Cu composite and 18-8 stainless steel were vacuum brazed with an improved Ni-based filler metal, with varying Ti content. The microstructure, element distribution, phase composition, and fracture mechanism of the brazed joints were investigated. The improve... |
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A Quantitative Description of Machining Effects to Mechanical Behavior of Sintered Powder Metals
10.1016/j.jmatprotec.2018.04.003 2018-04-11 Sintered powder metals play increasingly important role in industry. The most remarkable mechanical characteristics of the sintered material is the high porosity, which characterizes deformations and failure of the material. It is confirmed additionally that ... |
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Flash butt Weldability of Inconel718 Alloy
10.1016/j.jmatprotec.2018.04.011 2018-04-10 Following fast upsetting deformation, the welding seam (WS) is formed at the surface of flash butt welded Inconel718 joint due to dynamic recrystallisation. The dissolution of γ″ and γ′ phases during temporary flashing is mainly responsible for the ~30% hardn... |
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Size effect affected mechanical properties and formability in micro plane strain deformation process of pure nickel
10.1016/j.jmatprotec.2018.04.001 2018-04-05 The plastic deformation behaviors are difficult to predict because of the size effects induced by the surface effect and inhomogeneous distribution of microstructure when the specimen dimension scales down to micro/meso scale. It is a non-trivial issue to stu... |
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High surface quality welding of aluminum using adjustable ring-mode fiber laser
10.1016/j.jmatprotec.2018.03.030 2018-04-03 A method to improve penetration and stabilize the welding phenomenon at a high welding speed has been described through experimental and numerical investigations. Using a high power laser beam consisting of a center and a ring part, influences of shielding ga... |
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Fabrication of Al/Mg/Al laminate by a porthole die co-extrusion process
10.1016/j.jmatprotec.2018.03.027 2018-03-30 A porthole die co-extrusion (PCE) process was proposed to fabricate the Al/Mg/Al laminate. The results showed that the laminate was successfully extruded without voids and cracks on the Al/Mg interface. The transition layer was formed and its thickness was in... |
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Micro-voids quantification for damage prediction in warm forging of biocompatible alloys using 3D X-ray CT and RVE approach
10.1016/j.jmatprotec.2018.03.020 2018-03-28 This study aims to quantify the three-dimensional (3D) micro-voids for damage prediction in warm forging through non-destructive X-ray computed tomography (CT) and RVE approach. Typical biocompatible alloys, i.e., stainless steel 316 L (SS316L) and titanium a... |
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Effect of chemical oxidizer on material removal rate in electrochemical oxidation assisted machining
10.1016/j.jmatprotec.2018.03.026 2018-03-28 Mechanical machining of brittle material is difficult due to generation of fracture or cracks on machined surfaces. Glassy carbon (GC) is a brittle carbon material having outstanding mechanical and chemical characteristics making it suitable for use in glass ... |
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Ultrasonic dynamic impact effect on deformation of aluminum during micro-compression tests
10.1016/j.jmatprotec.2018.03.021 2018-03-28 Conventional ultrasonic-assisted forming in macro scale has been studied widely for decades. However, ultrasonic dynamic impact effect, more likely to occur in micro scale, has never been studied thoroughly. The purpose of this study is to investigate the mat... |
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An experimental and numerical study on laser shock clinching for joining copper foil and perforated stainless steel sheet
10.1016/j.jmatprotec.2018.03.025 2018-03-27 This paper presents an experimental and numerical study on laser shock clinching (LSC) for joining copper foil and perforated stainless steel sheet. The deformation evolution of an interlock was discussed by analyzing the cross sections and thickness distribu... |