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Stagnation zone during the turning of Duplex SAF 2205 stainless steels alloy

Version 2 2024-06-03, 12:34
Version 1 2017-03-01, 13:15
journal contribution
posted on 2024-06-03, 12:34 authored by J Nomani, A Pramanik, Tim HilditchTim Hilditch, G Littlefair
Duplex stainless alloys are extremely sensitive to cutting speed for strain hardening during machining. Tool wear for these materials is dominated by the adhesion wear because of formation of built-up edge (BUE) that upsurges the flank wear considerably. In addition, flute damage is a significant problem during drilling of those alloys. To address this issue, this paper investigates the mechanism of BUE creation in stagnation region of duplex SAF 2205 alloys during material removal by turning process. The investigation of chip root through SEM and electron backscatter diffraction (EBSD) revealed build-up of ferritic bands at the stagnation zone. Higher capacity of austenite phase to deform plastically is accountable for the ferrite build-up. This was detected as a possible activating mechanism of built-up edge. The flow pattern of austenite phase designates faster deforming compare to that of ferrite phases.

History

Journal

Materials and manufacturing processes

Volume

32

Pagination

1486-1489

Location

Abingdon, Eng.

ISSN

1042-6914

eISSN

1532-2475

Language

eng

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2017, Taylor & Francis

Issue

13

Publisher

Taylor & Francis