Research on Gas Nitriding Technology Catalyzed by Rare Earth for 40CrNiMoA Alloy Steel

Wan Jun Li; Xiao Xia Li

doi:10.4028/www.scientific.net/MSF.953.21

Paper Titles

Preface

Zn-Assisted Liquid Metal Embrittlement of 980MPa Grade Advanced High Strength Steels
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Microstructures and Properties of Friction Stir Welded Al-Cu Lap Joints
p.9

Numerical Simulations of Projectile Nose Angle Effect in Ballistic Perforation of Double-Layered Steel Plates
p.15

Research on Gas Nitriding Technology Catalyzed by Rare Earth for 40CrNiMoA Alloy Steel
p.21

Effect of Mold Temperature on Surface Segregation of Continuous Unidirectional Solidified Cu-Ag Alloy
p.26

Effect of Pipe Length on the Temperature Field for 9% Cr Heat-Resistant Steel Pipes in Local Post Weld Heat Treatment
p.32

Pitting Corrosion Failure Analysis of a Produced Oil/Water Fluid Pipeline
p.39

Morphology and Properties of Poly(Lactic Acid)/Ethylene-Octene Copolymer Nanocomposites
p.47

HomeMaterials Science ForumMaterials Science Forum Vol. 953Research on Gas Nitriding Technology Catalyzed by...

Research on Gas Nitriding Technology Catalyzed by Rare Earth for 40CrNiMoA Alloy Steel

Abstract:

A kind of gas nitriding method catalyzed by rare earth for 40CrNiMoA alloy steel was researched in this article. Effect of temperature on surface hardness of gas nitriding method catalyzed by rare earth, change law of layer depth with time at 500 °C were carried out and compared with normal gas nitriding. Based on these researches, gas nitriding method catalyzed by rare earth was optimized. The results show that gas nitriding catalyzed by rare earth can not only increase the nitriding speed, but also enhance the surface hardness of the nitriding layer. Using three - stage gas nitriding method catalyzed by rare earth and after 40 hours, the samples can meet the need of nitrided layer depth no less than 0.5mm, surface vickers hardness no less than 600.

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Periodical:

Materials Science Forum (Volume 953)

Pages:

21-25

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.953.21

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Online since:

May 2019

Authors:

Wan Jun Li*, Xiao Xia Li

Keywords:

40CrNiMoA Alloy Steel, Gas Nitriding Method, Nitriding Catalyzed by Rare Earth

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* - Corresponding Author

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