The Effect of Process Parameters in Interdendritic-Melt Solidification Control Technique on the Microstructure and Properties of a Ni-Base Superalloy

Liang Zheng; Guo Qing Zhang; Dominik Daisenberger; Zhou Li; Cheng Bo Xiao

doi:10.4028/www.scientific.net/MSF.879.1129

Paper Titles

Gas Nitriding of High-Vanadium Alloy Steel
p.1105

Morphology Evolution of Grain Boundary Carbides in Highly Twinned Inconel Alloy 600
p.1111

Deep Ultraviolet Photodetector Based on Sulphur-Doped Cubic Boron Nitride Thin Film
p.1117

Influence of Cu Doping on Martensitic and Magnetic Transitions in Ni-Mn-Sn Alloys
p.1123

The Effect of Process Parameters in Interdendritic-Melt Solidification Control Technique on the Microstructure and Properties of a Ni-Base Superalloy
p.1129

Affinity Viscosimetry Sensor for Enzyme Free Detection of Glucose in a Micro-Bioreaction Chamber
p.1135

Experimental Bio-ESPI for Validation of Magnetic Induced Deformation on HeLa Cells
p.1141

Microstructure of Z-Phase Strengthened Martensitic Steels: Meeting the 650°C Challenge
p.1147

Morphological Evolution of Carbides in DZ125 Superalloy during Heat Treatment
p.1153

HomeMaterials Science ForumMaterials Science Forum Vol. 879The Effect of Process Parameters in...

The Effect of Process Parameters in Interdendritic-Melt Solidification Control Technique on the Microstructure and Properties of a Ni-Base Superalloy

Abstract:

A novel technique called interdendritic-melt solidified control (IMSC) was developed to manufacture equiaxed superalloy in the efforts of reducing porosity. The effect of process parameter, such as withdrawal rate, of the IMSC on the porosities and mechanical properties of IN792 alloy was investigated, compared with conventional investment casting (CC) technique. The IMSC and CC samples were characterized by optical metallography and scanning electron microscopy. In addition, the minor phases, such as MC carbides and trace amount of η phase, were identified by synchrotron X-ray diffraction. The results indicate that proper withdrawal rate for IMSC can produce castings with much reduced porosity and higher stress rupture properties at elevated temperature compared to conventional investment casting. However, fast withdrawal rate will produce much severe porosity and lower mechanical property.