DEPENDENCE OF CREEP FRACTURE OF INCONEL 718 ON GRAIN BOUNDARY PRECIPITATES

1997 ◽  
Vol 45 (7) ◽  
pp. 2735-2746 ◽  
Author(s):  
W. CHEN ◽  
M.C. CHATURVEDI
Keyword(s):  
Grain Boundary ◽  
Inconel 718 ◽  
Creep Fracture

scholarly journals Influence of Building Direction on the Oxidation Behavior of Inconel 718 Alloy Fabricated by Additive Manufacture of Electron Beam Melting

Materials ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 2549 ◽  
Author(s):  
Lv Li ◽  
Xiaojuan Gong ◽  
Xianjue Ye ◽  
Jianwei Teng ◽  
Yan Nie ◽  
...  
Keyword(s):  
Electron Beam ◽  
Grain Boundary ◽  
Inconel 718 ◽  
Electron Beam Melting ◽  
Oxidation Behavior ◽  
Additive Manufacture ◽  
Inconel 718 Alloy ◽  
Temperature Oxidation ◽  
Boundary Density ◽  
High Temperature Oxidation Behavior

This research was aimed at investigating the high temperature oxidation behavior of Inconel 718 superalloy fabricated by electron beam melting with the building direction of 0°, 55° and 90° deviation from the Z axis of cylindrical samples. Columnar γ-fcc phase with preferred crystal orientations was found in all specimens. With the temperature ranging from 700 to 1000 °C, the 0° sample, symbolized by the lowest grain boundary density, and largest grain size, reveals the best oxidation performance. It is concluded that the building direction has more impact on the amount of grain boundary density than crystal orientation, which determined the oxidation resistance.

scholarly journals Grain Boundary Dependent Creep Behaviour of Inconel 718

1993 ◽  
Vol 32 (4) ◽  
pp. 363-367 ◽  
Author(s):  
W. Chen ◽  
M. C. Chaturvedi
Keyword(s):  
Grain Boundary ◽  
Inconel 718 ◽  
Creep Behaviour

Effect of processing parameters on grain boundary modifications to alloy Inconel 718

2007 ◽  
Vol 458 (1-2) ◽  
pp. 58-66 ◽  
Author(s):  
Qiangyong Li ◽  
B.M. Guyot ◽  
N.L. Richards
Keyword(s):  
Grain Boundary ◽  
Inconel 718 ◽  
Processing Parameters

GROWTH AND LINKAGE OF CRACKS AND FORMATION OF CREEP FRACTURE PATTERN SIMULATED BY A MULTICRACK GROWTH MODEL

Fractals ◽  
2001 ◽  
Vol 09 (02) ◽  
pp. 223-230 ◽  
Author(s):  
MANABU TANAKA ◽  
RYUICHI KATO ◽  
ATSUSHI KAYAMA
Keyword(s):  
Grain Size ◽  
Grain Boundary ◽  
Growth Model ◽  
Size Dependence ◽  
Grain Boundary Sliding ◽  
Fracture Pattern ◽  
Square Lattice ◽  
Creep Fracture ◽  
Lattice Effects ◽  
Boundary Sliding

A computer simulation using a multicrack growth model was carried out on the growth and linkage of cracks and the formation of creep fracture pattern resulting from the initial defects. The percolated crack patterns and the number of steps to percolation were examined by Monte Carlo simulation on a square lattice. Effects of stress and grain size on creep fracture process are then discussed. The stress and grain size dependence of the number of steps to percolation in the simulation was similar to that of grain-boundary sliding in the austenitic 21Cr-4Ni-9Mn heat-resisting steel, which controlled the growth of grain-boundary cracks. The fractal dimension of the percolation crack was also correlated with that of the creep fracture pattern in the 21Cr-4Ni-9Mn steel.

Effects of grain boundary heterogeneities on creep fracture studied by rate-dependent cohesive model

2012 ◽  
Vol 93 ◽  
pp. 48-64 ◽  
Author(s):  
Chi-Hua Yu ◽  
Chang-Wei Huang ◽  
Chuin-Shan Chen ◽  
Yanfei Gao ◽  
Chun-Hway Hsueh
Keyword(s):  
Grain Boundary ◽  
Cohesive Model ◽  
Creep Fracture ◽  
Rate Dependent
Sign in / Sign up

Export Citation Format

Share Document