Modification of M2 hardfacing: Effect of molybdenum alloying and laser surface melting on microstructure and wear performance

被引：21

作者：

Dilawary, Shaikh Asad Ali ^{[1
]}

Motallebzadeh, Amir ^{[2
]}

Houdkova, Sarka ^{[3
]}

Medlin, Rostislav ^{[3
]}

Haviar, Stanislav ^{[4
,5
]}

Lukac, Frantisek ^{[6
]}

Afzal, Muhammad ^{[7
]}

Cimenoglu, Huseyin ^{[1
]}

机构：

[1] Istanbul Tech Univ, Dept Met & Mat Engn, Istanbul, Turkey

[2] Koc Univ, Surface Sci & Technol Ctr KUYTAM, Istanbul, Turkey

[3] Univ West Bohemia, New Technol Res Ctr, Plzen, Czech Republic

[4] Univ West Bohemia, Fac Appl Sci, Dept Phys, Plzen, Czech Republic

[5] Univ West Bohemia, Fac Appl Sci, NTIS European Ctr Excellence, Plzen, Czech Republic

[6] Inst Plasma Phys CAS, Za Slovankou 3, Prague 18200, Czech Republic

[7] Univ Engn & Technol, Dept Met & Mat Sci, Lahore, Pakistan

来源：

WEAR | 2018年 / 404卷

关键词：

M2 high-speed steel; Hardfacing; Molybdenum; Laser surface melting; Tribo-oxide; Wear; HIGH-SPEED STEEL; STELLITE; 12; TOOL STEEL; SLIDING SPEED; IRON-OXIDES; BEHAVIOR; SOLIDIFICATION; CARBIDES; RESISTANCE; DECOMPOSITION;

D O I：

10.1016/j.wear.2018.03.013

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The influence of alloying (10wt% Molybdenum) and post deposition treatment (Laser Surface Melting) on the structural characteristics and wear performance of Plasma Transfer Arc deposited M2 hardfacings have been investigated. The nature of matrix and carbides of M2 hardfacing had changed upon Molybdenum addition while the Laser Surface Melting caused structural refinement and a decrease in carbide volume fraction. Despite an increase in hardness, Laser Surface Melting has resulted in reduction in sliding wear resistance against alumina counterface, while the Molybdenum enhanced the wear resistance even with decrease in hardness. This counter intuitive behaviour is attributed to Magnelli oxide containing tribo-oxide layer formation on the worn surface of Molybdenum alloyed hardfacings.

引用

页码：111 / 121

页数：11

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