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Metallurgist

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23-07-2024

Influence of intense dynamic action on the structure and properties of austenitic weld metal with nitrogen

Authors: Al. S. Smolentsev, V. E. Veselova

Published in: Metallurgist | Issue 3/2024

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Abstract

The effect of local high-speed intense dynamic action by a metal object (indenter) on the change in the structure of weld metal of high strength alloy steel welded with austenitic flux-cored wire with nitrogen is studied. It is established that after welding the weld metal structure consists of austenite and delta-ferrite (3 vol. %) with microhardness HV_0.1 200–250. After intense dynamic action weld metal is strengthened by a γ → ε → α’ mechanism due to work hardening and formation of deformation within the structure of α’-martensite in an amount of 10 vol.% and a small amount of ε‑martensite while maintaining the original amount of δ‑ferrite, and with an increase in microhardness by more than 1.7 times from the initial level.

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Title: Influence of intense dynamic action on the structure and properties of austenitic weld metal with nitrogen
Authors: Al. S. Smolentsev
V. E. Veselova
Publication date: 23-07-2024
Publisher: Springer US
Published in: Metallurgist / Issue 3/2024
Print ISSN: 0026-0894
Electronic ISSN: 1573-8892
DOI: https://doi.org/10.1007/s11015-024-01733-2

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