“Super-Alloy”, Phone line Sheaths, and more

1947 ◽  
Vol 176 (1) ◽  
pp. 17-17
Keyword(s):  
Phone Line ◽  
Super Alloy

Quantitative Microstructural Analysis of a Ni-based Superalloy After Different Heat Treatments

2020 ◽  
Vol 70 (12) ◽  
pp. 4519-4524
Keyword(s):  
Heat Treatment ◽  
Internal Structure ◽  
Microstructural Analysis ◽  
Temperature Treatment ◽  
Heat Treatments ◽  
Metal Melts ◽  
Metallic Inclusions ◽  
Undercooled Melt ◽  
Super Alloy

The efficiency of time-temperature treatment (T-TT) on metal melts can be microstructurally analysed through their degree of purity in non-metallic inclusions. In the case of the Ni-based super alloy under discussion (MSRR 7045) the heat treatment was the undercooling consequences both on the durability of the casting environment (ingots-refractories) and on the internal structure of the metal (porosity, microstructural isotropy). Keywords: time-temperature treatment, undercooled melt, non-metallic inclusions, purity, microstructural isotropy

Effect of machining conditions on shear angle in turning of A286 iron based nickel super alloy

2021 ◽  
Author(s):  
M. Venkata Ramana ◽  
G. Krishna Mohana Rao ◽  
G Prasanth ◽  
Bidya Sagar ◽  
P. Ravi Kumar ◽  
...  
Keyword(s):  
Shear Angle ◽  
Machining Conditions ◽  
Iron Based ◽  
Super Alloy

Research on Effect of Alloy Elements on Equilibrium and Properties of Ni-Cr-Co Type Nickel-Based Superalloy

2016 ◽  
Vol 849 ◽  
pp. 513-519
Author(s):  
Qing Quan Zhang ◽  
Ming Yang Li ◽  
Ran Wei ◽  
Hui Yun Wu ◽  
Zhen Rui Li
Keyword(s):  
High Temperature ◽  
Room Temperature ◽  
High Temperature Strength ◽  
Nickel Based Superalloy ◽  
Type 3 ◽  
Room Temperature Strength ◽  
Super Alloy ◽  
Type Nickel

Ni-Cr-Co type Nickel-based super alloy Inconel 740H was studied. The effect of Nb, Al and Ti on the equilibrium of this alloy was analyzed by JMatPro software. The amount of Ti and Nb should be controlled by 1.50wt.%, and meanwhile, Al should be 1.0-2.0wt.%. If Mo and W were added the amount of Mo should be in the range of 1.0-2.0wt. %, and W should be about 1.0wt.%. Based on these results, three types of new alloys were designed, which contain Ni-Cr-Co-Mo type (1#), Ni-Cr-Co-W type (2#) and Ni-Cr-Co-Mo-W type (3#). Compared with the Ni-Cr-Co type Inconel 740H alloy, the room temperature strength, high temperature strength and high temperature durable performance of the three new alloys improved, which can provide the evidence and reference to optimize the chemical composition of Inconel 740H alloy, i.e., adding 1.50wt.% Mo and 1.0wt.% W individually or together.

A Study on Tensile Deformation Features of Ni-Based Super-Alloy Prepared by EB-PVD

2011 ◽  
Vol 55-57 ◽  
pp. 251-256
Author(s):  
Li Ma ◽  
Ting Zhang ◽  
Xiao Li ◽  
Zhao Hui Hu
Keyword(s):  
Physical Vapor Deposition ◽  
Large Scale ◽  
Tensile Deformation ◽  
Alloy Sheet ◽  
Dislocation Climb ◽  
Dislocation Glide ◽  
Double Phase ◽  
Transmission Electron ◽  
Deformation Features ◽  
Super Alloy

Large-scale Ni-based super-alloy sheet has been prepared by electron beam physical vapor deposition (EB-PVD). Microstructure and the dislocation structures in the γ-γ′ double phase alloy under different temperature after tensile strain are studied with Transmission electron microscopy (TEM). The results show that the dislocation glide in single slip system and shearing mechanics, the dislocation climb with part shearing, absolute dislocation climb and cross slip, dislocation round are a course of the interacting degree between dislocation and γ′ phase gradually weakened under the tensile temperature from room temperature to high temperature, so as to decrease materials strength and increase plasticity.

Evaluation of Surface Integrity in Electrochemical Micromachining of A286 Super alloy

2021 ◽  
Author(s):  
Rajkeerthi E ◽  
Hariharan P
Keyword(s):  
Surface Roughness ◽  
Surface Quality ◽  
Surface Integrity ◽  
Research Work ◽  
Machining Process ◽  
Electrochemical Micromachining ◽  
Dissolution Mechanism ◽  
Machined Surface ◽  
Micro Holes ◽  
Super Alloy

Abstract Surface integrity of micro components is a major concern particularly in manufacturing industries as most geometry of the products must meet out necessary surface quality requirements. Advanced machining process like electrochemical micro machining possess the capabilities to machine micro parts with best surface properties exempting them from secondary operations. In this research work, different electrolytes have been employed for producing micro holes in A286 super alloy material to achieve the best surface quality and the measurement of surface roughness and surface integrity to evaluate the machined surface is carried out. The machined micro hole provides detailed information on the geometrical features. A study of parametric analysis meant for controlling surface roughness and improvement of surface integrity has been made to find out the suitable parameters for machining. The suitability of various electrolytes with their dissolution mechanism and the influence of various electrolytes have been thoroughly studied. Among the utilized electrolytes, EG + NaNO3 electrolyte provided the best results in terms of overcut and average surface roughness.

GA-based optimisation using RSM in WEDM of Nimonic-90: a nickel-based super alloy

2018 ◽  
Vol 28 (1) ◽  
pp. 53 ◽  
Author(s):  
Vinod Kumar ◽  
Kamal Kumar Jangra ◽  
Vikas Kumar ◽  
Neeraj Sharma
Keyword(s):  
Super Alloy

scholarly journals Why Parents Use the Emergency Department Despite Having a Medical Home

2018 ◽  
Vol 58 (1) ◽  
pp. 95-99 ◽  
Author(s):  
Kalpana Pethe ◽  
Allison Baxterbeck ◽  
Susan L. Rosenthal ◽  
Melissa S. Stockwell
Keyword(s):  
Emergency Department ◽  
Low Income ◽  
Medical Home ◽  
Medical Problem ◽  
Community Based ◽  
Phone Line ◽  
Medical Homes ◽  
Medical Home Model ◽  
After Hours ◽  
Publicly Insured

Despite having a medical home, pediatric patients continue emergency department (ED) utilization for various reasons. This study examines parental reasons associated with the decision to seek ED care in a group of low-income, inner-city, publicly insured children. Surveys were conducted with parents of children (age = 0-19 years) presenting to a community-based clinic, which has an established medical home model with enhanced access. Most patients (88.3%) had a pediatrician, and nearly all (93.3%) reported a visit to the ED; most (75.7%) were aware of clinic walk-in hours, but less than half (42.6%) were aware of an after-hours phone line. There was no difference in those who were aware of walk-in hours or an after-hours phone line and a reported ED visit. Half of the parents (52.5%) thought their child’s medical problem was serious. In addition to providing enhanced efforts, medical homes should strive to make families aware of increased access.

On the advantages of nickel-base super-alloy laser cladding by direct powder injection

1999 ◽  
Author(s):  
B. Medres ◽  
L. Shepeleva ◽  
M. Bamberger ◽  
A. Weisheit
Keyword(s):  
Laser Cladding ◽  
Powder Injection ◽  
Nickel Base ◽  
Super Alloy
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