Grindability evaluation and tool wear during grinding of Ti2AlNb intermetallics

This article aims at providing a fundamental performance evaluation when grinding Ti 2 AlNb intermetallics using SiC abrasive. The wheel speed is fixed at 20 m/s while a range of depth of cut (5–20 μm) and workpiece infeed speed (3–12 m/min) are applied. For better understanding, two kinds of common...

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Bibliographic Details
Published inInternational journal of advanced manufacturing technology Vol. 94; no. 1-4; pp. 1441 - 1450
Main Authors Xi, Xinxin, Ding, Wenfeng, Fu, Yucan, Xu, Jiuhua
Format Journal Article
LanguageEnglish
Published London Springer London 2018
Springer Nature B.V
Subjects
Abrasive wheels
Abrasives
CAE) and Design
Computer-Aided Engineering (CAD
Engineering
Grindability
Grinding wheels
Industrial and Production Engineering
Integrity
Intermetallic compounds
Mechanical Engineering
Media Management
Nickel base alloys
Original Article
Parameters
Performance evaluation
Superalloys
Surface roughness
Titanium alloys
Titanium base alloys
Tool wear
Workpieces
Surface integrity
AlNb intermetallics
Grindability
Ti
Tool wear
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Summary:This article aims at providing a fundamental performance evaluation when grinding Ti 2 AlNb intermetallics using SiC abrasive. The wheel speed is fixed at 20 m/s while a range of depth of cut (5–20 μm) and workpiece infeed speed (3–12 m/min) are applied. For better understanding, two kinds of common difficult-to-cut materials, i.e., Ti-6Al-4V titanium alloy and Inconel718 nickel-based superalloy are also ground to form a comparison. As for the equal grinding parameters, the normal and tangential grinding forces of Ti 2 AlNb intermetallics are found to be about twice of those of Ti-6Al-4V alloy, and be only a third and a half of those of Inconel718 alloy, respectively. In addition, Ti 2 AlNb intermetallics shows more severe tool wear and associated lower G-ratio compared to Inconel718 alloy as a result of strong affinity for SiC abrasives. For the surface integrity, Ti 2 AlNb intermetallics reveal the same ground surface roughness level, i.e., 0.3–0.6 μm for the applied grinding parameters, with Ti-6Al-4V alloy and Inconel718 alloy. A white layer is easily formed during grinding of Ti 2 AlNb intermetallics, which adversely affects the machined surface integrity.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-017-1005-7