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High temperature tensile deformation in single-pass friction stirred AZ31 alloy
Department of Mechanical Engineering, School of Technology, Pandit Deendayal Energy University (formerly known as Pandit Deendayal Petroleum University), Raisan, Gandhinagar (IND).
Department of Mechanical Engineering, School of Technology, Pandit Deendayal Energy University (formerly known as Pandit Deendayal Petroleum University), Raisan, Gandhinagar (IND).
University West, Department of Engineering Science, Division of Welding Technology. (KAMPT)ORCID iD: 0000-0002-9015-7372
2023 (English)In: International Journal of Lightweight Materials and Manufacture, ISSN 2589-7225, Vol. 6, no 1, p. 140-148Article in journal (Refereed) Published
Abstract [en]

The present study has expounded the effect of high temperatures on the tensile deformation of AZ31 magnesium alloy processed through a single-pass of friction stir processing (FSP). The major operation parameters, namely rotation speed and traverse speed of the FSP tool, were varied which led to extensive dynamic recrystallization (DRX) in the stir zone (SZ) engendering maximum grain refinement of about 63% as compared to the base metal. The lowest average grain size ∼ 5.66 μm was attained after a single FSP pass. Optical microscopy (OM) was followed by the uniaxial tensile tests at three different temperatures of 350, 400 and 450 ºC at a constant strain rate of 1.3 × 10−3/s. As the deformation temperature was raised, the flow stress reduced and led to appreciable increments in the processed material’s tensile elongations. The maximal elongation to fracture of 160% was observed in the friction stir processed (FSPed) sample possessing the finest grains. 

Place, publisher, year, edition, pages
KeAi Publishing Communications Ltd. , 2023. Vol. 6, no 1, p. 140-148
Keywords [en]
Dynamic recrystallization; Elongation; Friction; Friction stir welding; Grain refinement; Grain size and shape; Magnesium alloys; Tensile testing; AZ31 alloy; AZ31 magnesium alloy; Friction stir processing; High-temperature tensile; Highest temperature; Operation parameters; Refinement; Rotation speed; Single pass; Tensile deformation; Strain rate
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-19291DOI: 10.1016/j.ijlmm.2022.09.003Scopus ID: 2-s2.0-85138794740OAI: oai:DiVA.org:hv-19291DiVA, id: diva2:1720665
Note

CC BY-NC-ND 4.0

The authors gratefully acknowledge the relevant assistance and valuable guidance provided throughout the experimental and testing phase under the sponsored project of ISRO (E33011/60/2010-V) by the Department of Mechanical Engineering, Pandit Deendayal Energy University (formerly known as Pandit Deendayal Petroleum University), Gujarat, India.

Available from: 2022-12-20 Created: 2022-12-20 Last updated: 2024-01-08Bibliographically approved

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Patel, Vivek

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