Influence of fused Silica and chills incorporation on Corrosion, Thermal and Chemical composition of ASTM A 494 M Grade Nickel alloy

International Conference on Advances in Materials and Manufacturing Applications 2016

Purushotham, G.^1 ; Hemanth, Joel^2

Department of Aeronautical Engineering, Mangalore Institute of Technology and Engineering, Moodbidri, Karnatakav

574 225, India^1

Department of Mechanical Engineering, HMS Institute of Technology, Tumkur, Karnataka

572104, India^2

关键词: Chemical compositions;    Chill blocks;    Corrosion behavior;    Nickel based alloy;    Nickel matrix;    Non-metallic;    Silica particles;    Strength to weight ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/149/1/012042/pdf
DOI  :  10.1088/1757-899X/149/1/012042

来源: IOP

【 摘 要 】

A review of a host of relevant literature on the composites leads to some important observations on the gap that prevails for developing the composite with increased strength to weight ratio, improved thermal properties and reduced corrosion rate with the addition of fused SiO2dispersoid for the nickel based alloy. In the arena of engineering, metallurgists look for techniques to improve the thermal, corrosion and chemical properties of the materials. In this connection an investigation has been carried out to fabricate and evaluate the corrosion, chemical and thermal properties of chilled composites consisting of nickel matrix with fused silica particles (size 40-150 μm) in the matrix. The main objective of the present research is to obtain fine grain Ni/SiO2chilled sound composite having very good properties. The dispersoid added ranged from 3 to 12 wt. % in steps of 3%. The subsequent composites cast in molds containing metallic and non-metallic chill blocks (MS, SiC & Cu) were tested for their microstructure, chemical, thermal properties and corrosion behavior.