Effect of Almandine on Microstructure and Corrosion properties of Nickel super alloy (K500) Composite for Aerospace Gas Turbine Application

International Conference on Advances in Manufacturing, Materials and Energy Engineering 2018

材料科学;能源学

Jain, Manas^1 ; Purushotham, G.^1

Mangalore Institute of Technology and Engineering, Badaga Mijar, Moodabidri, India^1

关键词: Corrosion property;    Directionally solidified;    Engineering materials;    Enhanced properties;    Gas turbine applications;    Induction furnace;    Rate of corrosions;    Reinforcing materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/376/1/012051/pdf
DOI  :  10.1088/1757-899X/376/1/012051

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Corrosion is one of the major threats that the engineering materials are prone to and aerospace gas turbine materials are not an exception. The increased rate of corrosion results in the erosion and deterioration of material and its properties. The rate of increase in corrosion at higher temperature is found to be exponential in gas turbines. The review of experimental works carried out indicates that the metal matrix composite poses enhanced properties than the parental metal alloy. In order to curtail the rate of increase in corrosion, this experiment deals with the addition of Almandine (Garnet) to Nickel K500 alloy, with the help of chills for obtaining improved directional solidification in casting. The Almandine, the reinforcing material, added to the matrix material varies from 3% to 9 % by weight, in steps of 3% of weight. The Process of melting is carried out in an induction furnace, and the molten composite is poured to the mould containing the chills. The resulting directionally solidified specimens are machined and tested for their microstructure and corrosion properties.