Abstract
Electron beam surface melting has been applied as a posttreatment to plasma-transferred, arc-deposited Stellite 6 hardfacing and its molybdenum-alloyed version. Molybdenum addition increased the surface-related properties—that is, hardness and wear resistance—via enriching the microstructure with carbides. Application of electron beam surface melting caused a further increment in hardness and wear resistance of the molybdenum-alloyed hardfacing by encouraging hypereutectic solidification to form a network of carbides surrounding the cobalt matrix. However, electron beam surface melting of the unalloyed hardfacing, which favored individual precipitation of fine carbides in the microstructure, decreased the wear resistance in contrast to the hardness.
| Original language | English |
|---|---|
| Pages (from-to) | 907-918 |
| Number of pages | 12 |
| Journal | Tribology Transactions |
| Volume | 62 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2019 |
Bibliographical note
Publisher Copyright:© 2019, © 2019 Society of Tribologists and Lubrication Engineers.
Funding
A Ph.D. study grant to Ali Abdul Munim Alhattab from the Ministry of Higher Education and Scientific Research of Iraq and an experimental research grant provided by Istanbul Technical University (Grant Number 41241) are gratefully acknowledged. The authors are extremely grateful to Senmak Co., Turkey, for the provision of PTA facilities and Dr. Muhammad Afzal, Pakistan, for electron beam processing. A Ph.D. study grant to Ali Abdul Munim Alhattab from the Ministry of Higher Education and Scientific Research of Iraq and an experimental research grant provided by Istanbul Technical University (Grant Number 41241) are gratefully acknowledged.
| Funders | Funder number |
|---|---|
| Ministry of Higher Education and Scientific Research | |
| Ministry of Higher Education and Scientific Research | |
| Istanbul Teknik Üniversitesi | 41241 |
Keywords
- nonferrous alloys
- surface modification
- Wear mechanism
- wear resistant