High temperature wear micromechanisms in Al–17Si–5Cu alloy after an isothermal heat treatment

2021 ◽  
pp. 1-15
Author(s):  
Biplab Hazra ◽  
Supriya Bera ◽  
Bijay Kumar Show
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Isothermal Heat Treatment ◽  
High Temperature Wear

scholarly journals Isothermal Heat Treatment of AISI 430 Ferritic Stainless Steel after High Temperature Gas Nitriding

2012 ◽  
Vol 25 (3) ◽  
pp. 115-120 ◽  
Author(s):  
Sang-Jun Park ◽  
Jung-Min Kim ◽  
Hee-Jae Kang ◽  
Chang-Yong Kang ◽  
Yung-Hee Kim ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
High Temperature ◽  
Ferritic Stainless Steel ◽  
Isothermal Heat Treatment ◽  
Gas Nitriding ◽  
Aisi 430 ◽  
High Temperature Gas

Effect of Heat Treatment on Microstructure and High Temperature Wear Properties of High Boron Medium Carbon Alloy

2015 ◽  
Vol 816 ◽  
pp. 581-585 ◽  
Author(s):  
Xiao Li Shi ◽  
Ye Hua Jiang ◽  
Zu Lai Li ◽  
Jun Tan
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Wear Mechanism ◽  
High Speed Steel ◽  
Wear Properties ◽  
Fatigue Wear ◽  
Medium Carbon ◽  
High Temperature Wear ◽  
The Matrix ◽  
High Boron

The microstructures and 500 °C high temperature wear properties of a high boron medium carbon alloy (HBMCA) quenched at 950 °C and then tempered at 500 °C were investigated, compared with a typical high speed steel (HSS). The results showed that the matrix structure of HBMCA after heat treatment was tempered sorbite. The content of herringbone-like and rodlike eutectic decreased. Hard phase precipitation (boron carbon compounds, e.g.M23 (C, B) 6, MB and M3B2) increased in the matrix. And the abrasion resistance of HBMCA after heat treatment at high temperature was 2.39 times of a typical HSS for roller. The wear mechanism of HSS at high temperature is a typical oxide fatigue wear mechanism, while as-quenched HBMCA is oxidation, adhesive wear mechanism.

High-Temperature Instability of A Cr2Nb-Nb(Cr) Microlaminate Composite

1996 ◽  
Vol 54 ◽  
pp. 374-375
Author(s):  
M. Larsen ◽  
R.G. Rowe ◽  
D.W. Skelly
Keyword(s):  
Heat Treatment ◽  
Solid Solution ◽  
High Temperature ◽  
Elevated Temperatures ◽  
Aircraft Engine ◽  
Lattice Parameter ◽  
Microstructural Stability ◽  
Elevated Temperature Strength ◽  
Cross Sectional ◽  
Bcc Structure

Microlaminate composites consisting of alternating layers of a high temperature intermetallic compound for elevated temperature strength and a ductile refractory metal for toughening may have uses in aircraft engine turbines. Microstructural stability at elevated temperatures is a crucial requirement for these composites. A microlaminate composite consisting of alternating layers of Cr2Nb and Nb(Cr) was produced by vapor phase deposition. The stability of the layers at elevated temperatures was investigated by cross-sectional TEM.The as-deposited composite consists of layers of a Nb(Cr) solid solution with a composition in atomic percent of 91% Nb and 9% Cr. It has a bcc structure with highly elongated grains. Alternating with this Nb(Cr) layer is the Cr2Nb layer. However, this layer has deposited as a fine grain Cr(Nb) solid solution with a metastable bcc structure and a lattice parameter about half way between that of pure Nb and pure Cr. The atomic composition of this layer is 60% Cr and 40% Nb. The interface between the layers in the as-deposited condition appears very flat (figure 1). After a two hour, 1200 °C heat treatment, the metastable Cr(Nb) layer transforms to the Cr2Nb phase with the C15 cubic structure. Grain coarsening occurs in the Nb(Cr) layer and the interface between the layers roughen. The roughening of the interface is a prelude to an instability of the interface at higher heat treatment temperatures with perturbations of the Cr2Nb grains penetrating into the Nb(Cr) layer.

Comparative high-temperature wear resistance of CHS88U-VI alloy and H30N50YU5T2 satellite

2014 ◽  
Vol 0 (4) ◽  
Author(s):  
Oleksandr M. Kostin ◽  
Anastasiia Yu. Butenko ◽  
Volodymyr O. Martynenko
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
High Temperature Wear

Effect of High Temperature on Wear Behavior of Stir Cast Aluminium/Boron Carbide Composites

2020 ◽  
Vol 22 (4) ◽  
pp. 1031-1046
Author(s):  
X. Canute ◽  
M. C. Majumder
Keyword(s):  
High Temperature ◽  
Wear Rate ◽  
Boron Carbide ◽  
Wear Behavior ◽  
Base Alloy ◽  
Weight Fraction ◽  
Sliding Velocity ◽  
Wear Properties ◽  
High Temperature Wear ◽  
The Matrix

AbstractThe need for development of high temperature wear resistant composite materials with superior mechanical properties and tribological properties is increasing significantly. The high temperature wear properties of aluminium boron carbide composites was evaluated in this investigation. The effect of load, sliding velocity, temperature and reinforcement percentage on wear rate was determined by the pin heating method using pin heating arrangement. The size and structure of base alloy particles change considerably with an increase of boron carbide particles. The wettability and interface bonding between the matrix and reinforcement enhanced by the addition of potassium flurotitanate. ANOVA technique was used to study the effect of input parameters on wear rate. The investigation reveals that the load had higher significance than sliding velocity, temperature and weight fraction. The pin surface was studied with a high-resolution scanning electron microscope. Regression analysis revealed an extensive association between control parameters and response. The developed composites can be used in the production of automobile parts requiring high wear, frictional and thermal resistance.

ALTEMP HX

Alloy Digest ◽  
1993 ◽  
Vol 42 (10) ◽  
Keyword(s):  
Heat Treatment ◽  
Solid Solution ◽  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Base Alloy ◽  
Heat Treating ◽  
Nickel Base Alloy ◽  
Temperature Performance ◽  
Nickel Base

Abstract ALTEMP HX is an austenitic nickel-base alloy designed for outstanding oxidation and strength at high temperatures. The alloy is solid-solution strengthened. Applications include uses in the aerospace, heat treatment and petrochemical markets. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-442. Producer or source: Allegheny Ludlum Corporation.

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