The effect of thermochemical treatments on case properties and impact behaviour of Astaloy CrM

“…Kazior et al demonstrated that gaseous nitriding is able to improve the wear resistance of sintered Fe-Cr-Mo alloy [9]. Compared to gas nitrocarburizing, the plasma process produces thinner compound layer, higher maximum hardness in the diffusion zone, lower diffusion zone, and induces less reduction in impact energy [10].…”

Section: Introductionmentioning

confidence: 99%

Study of corrosion behavior for nitrocarburized sintered Astaloy CrM®+C

Teimouri

Ahmadi

Pirayesh

et al. 2009

Journal of Alloys and Compounds

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“…In a different study, thermo chemical processing mechanical properties and impact energy of Astaloy CrM It was investigated. Positive results were obtained [21].…”

Section: Introductionmentioning

confidence: 99%

DETERMINING PROPERTIES OF NICKEL BASED COMPOSITE THAT REINFORCED BY ELECTROLESS NICEL PLATED BORON NITRIDE AND ASTALOY-CrM POWDERS

Yönetken

2020

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

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Industrial development brings with it the need for new materials every day. When it comes to obtaining more than one feature together, composite materials are at the forefront of the material groups. In composite materials, the main matrix and reinforcement element are defined and known according to the material group and the morphology of the reinforcement elements. Electroless nickel plating process is the chemical coating of nickel and its alloys on metal surfaces without using electric current by the immersion method. This process is also preferred in many areas in industrial applications for improving surface wear resistance of metallic and ceramic powders. These metallic and ceramic powders are used for reinforcement to production of nickel base composite in this study. For this purpose Ni coated (1.66% BN ceramic + 31.65% Astaloy-CrM metallic) + %66,67Ni nickel powders were shaped circularly in uniaxial cold press. These samples are sintered in conventional furnace with argon atmosphere at the temperature of 1000, 1100, 1200, 1300 and 1400 °C for two hours. The mechanical properties of Ni based electroless Ni plated ceramic and metallic powders reinforced composite samples were determined. In addition, the metallographic evaluation was carried out by XRD analysis and SEM (Scanning Electron Microscope) on the samples. Consequently, the highest density and hardness is obtained composite made from (1,66%BN + 31,65%Astaloy-CrM) + 66,67%Ni powders, It was sintered at temperature of 1400°C for two hour in tube furnace.

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“…Another way to improve the properties of these alloys is by applying heat, thermochemical or mechanical treatments [15][16][17][18][19][20][21][22]. Fluidized bed carburizing is a thermochemical treatment that provides high heat and mass transfer.…”

Section: Introductionmentioning

confidence: 99%

Determination of Porosity in Fluidized-Bed Carburized P/M Compacts Using an Image Software Analysis

Marin

2021

Ann_UGAL_MMS

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The aim of this research was to study the porosity in carburizing in fluidized-bed on sintered alloys produced by powder metallurgy route using an image analysis software and to compare the obtained results with the conventional method for porosity measurements. Porosity is a measure of the void fraction in a material. The total porosity is defined by the ratio of the volume of void space to the total bulk volume of the material, expressed as a percentage. Development of digital images and computer software lead to a new and suitable method to determine the porosity of powder metallurgy materials.

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The effect of thermochemical treatments on case properties and impact behaviour of Astaloy CrM

Cited by 11 publications

References 18 publications

Study of corrosion behavior for nitrocarburized sintered Astaloy CrM®+C

Study of corrosion behavior for nitrocarburized sintered Astaloy CrM®+C

DETERMINING PROPERTIES OF NICKEL BASED COMPOSITE THAT REINFORCED BY ELECTROLESS NICEL PLATED BORON NITRIDE AND ASTALOY-CrM POWDERS

Determination of Porosity in Fluidized-Bed Carburized P/M Compacts Using an Image Software Analysis

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