Microstructural characteristics of Alloy 718 and Waspaloy and their influence on flank wear during turning
Journal article, 2018
The results show that Alloy 718 is associated with faster flank wear progression as compared with Waspaloy. The difference in wear is not likely to be the result of higher thermal and mechanical loads on the tool during machining Alloy 718. Characterization of obtained flank wear topographies after removal of adhered workpiece material revealed that abrasive wear is the dominant wear mechanism during machining both superalloys with the investigated cutting parameters. Varying extents of abrasive tool wear during cutting of the two alloys are therefore the likely reason for the different wear rates. In connection to that, significantly larger quantities of hard phases, specifically primary MC-type carbides and TiN-inclusions were found in the Alloy 718 workpiece which can explain the faster flank wear progression during machining this alloy.
Electron microscopy
Sliding wear
High temperature
Cutting tools
Superalloys
Micro-scale abrasion
Author
Philipp Hoier
Chalmers, Industrial and Materials Science, Materials and manufacture
Amir Malakizadi
Chalmers, Industrial and Materials Science, Materials and manufacture
Pietro Stuppa
Chalmers, Industrial and Materials Science, Materials and manufacture
Stefan Cedergren
GKN Aerospace Sweden
Uta Klement
Chalmers, Industrial and Materials Science, Materials and manufacture
Wear
0043-1648 (ISSN)
Vol. 400-401 184-193Subject Categories
Tribology
Materials Engineering
Manufacturing, Surface and Joining Technology
Areas of Advance
Production
Materials Science
DOI
10.1016/j.wear.2018.01.011