This paper describes the fabrication and mechanical testing of Al-Mg-boron carbide particulate composites using stir casting technique. The size of the boron carbide particulates is ranging between 30 to 100 μm. The boron carbide contents are varied from 3 and 7% by weight and are dispersed in the alloy matrix. The mechanical properties of the castings, particularly their tensile properties and...

Burnishing is cold working process where hard roller are being pressed against irregular surface, so that surface finish and the micro hardness increases. In this study internal roller burnishing tool is used to burnish the drilled hole. Speed, feed, and number of passes have been varied using taguchi method to examine the surface finish and microhardness. Anova analysis is carried out. Surface...

Abstract Boronizing treatment on the surface of wear-resistant steel can both improve hardness and abrasion resistance layer reduce difference between boride substrate, which also greatly crush performance effeciently prevent occurrence brittle fragile boronizing in service process. In this paper, a without impurities was fabricated high strength wear resistant (HSWRS) by solid powder treatment...

Abstract The synthesis and microhardness studies of ZnS with PVK ((Poly N-Vinylcarbazole) nanocomposites are presented. thin films was form different loding in using chemical rout method characterized them SEM (Scanning Electron microscope), XRD (X-ray diffraction), AFM (Atomic Force Microscope) study their mechanical properties. shows have cubic nanocrystals structure, particle size about 3 to...

Stainless steels stabilized with Ti or Nb are largely used in offshore and shipbuilding industries due to its excellent corrosion resistance. In this study, carbide stabilizers, Ti and Nb, were added to stainless steel 304 specimens with different concentrations(Ti: 0.26%, 0.71%, Nb: 0.29%, 0.46%, 0.71%), and their mechanical and electrochemical characteristics were evaluated. Micro-Vickers har...

For the first time, Zr–Ge–N films were deposited on silicon and steel substrates by sputtering a Zr–Ge composite target in reactive Ar– N2 mixture. The films were characterised by electron probe microanalysis, X-ray diffraction, micro-Raman spectroscopy and depth-sensing indentation. The effects of the Ge content and substrate bias voltage on the films’ structure, internal stress, hardness and ...