ORCID Profile
0000-0001-9300-8690
Current Organisations
RMIT University
,
EPIC Engineering Comic
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Publisher: Springer Science and Business Media LLC
Date: 04-01-2021
DOI: 10.1186/S10033-020-00526-3
Abstract: Self-piercing riveting (SPR) is a cold forming technique used to fasten together two or more sheets of materials with a rivet without the need to predrill a hole. The application of SPR in the automotive sector has become increasingly popular mainly due to the growing use of lightweight materials in transportation applications. However, SPR joining of these advanced light materials remains a challenge as these materials often lack a good combination of high strength and ductility to resist the large plastic deformation induced by the SPR process. In this paper, SPR joints of advanced materials and their corresponding failure mechanisms are discussed, aiming to provide the foundation for future improvement of SPR joint quality. This paper is ided into three major sections: 1) joint failures focusing on joint defects originated from the SPR process and joint failure modes under different mechanical loading conditions, 2) joint corrosion issues, and 3) joint optimisation via process parameters and advanced techniques.
Publisher: Elsevier BV
Date: 12-2016
Publisher: Elsevier BV
Date: 11-2017
Publisher: Inderscience Publishers
Date: 2023
Publisher: Springer International Publishing
Date: 2022
Publisher: Elsevier BV
Date: 06-2017
Publisher: Springer Science and Business Media LLC
Date: 23-05-2019
Publisher: MDPI AG
Date: 26-11-2021
DOI: 10.3390/MA14237220
Abstract: The anelastic deformation, resulting from partial reversal of {101¯2} twinning, is studied at room temperature to 150 °C on several commercial die-cast magnesium alloys for the first time. The magnitude of anelastic strain decreases with increasing temperature. For inter-alloy comparison, AZ91 shows the largest maximum anelastic strain, while AM40 and AM60 show similar maximum anelastic strain. The phenomenon is discussed in terms of solid solution softening and hardening of slip planes and how they influence twinning. T5-aged AE44 consistently shows smaller magnitude of anelasticity compared to as-cast AE44, suggesting that the precipitates formed during ageing may decrease the twin-boundary mobility and further suppress untwinning. Presence of anelasticity poses a challenge to yield strength measurement using the conventional 0.2% offset method, and a more accurate and consistent method of using a higher offset strain or a lower modulus is proposed in this study.
Publisher: Springer International Publishing
Date: 2017
Publisher: Trans Tech Publications, Ltd.
Date: 02-2020
DOI: 10.4028/WWW.SCIENTIFIC.NET/AEF.35.1
Abstract: The tensile deformation behaviour of magnesium alloy AE44 (Mg-4Al-4RE) under strain rates ranging from 10 -6 to 10 -1 s -1 has been investigated. Present study shows that the deformation mode begins with the activation of elastic (Stage 1), followed by a basal slip and twinning (Stage 2), a prismatic slip (Stage 3) and finally to c+a pyramidal slip (Stage 4). The commencement of these deformation mechanisms results in four distinct stages of strain hardening in the stress-strain curve. In this work, the four stages of deformation behaviour are modelled, and an empirical equation is proposed to predict the entire stress-strain curve. Overall, the model predictions are in good agreement with the experimental data. This study on the decomposition of stress-strain curve into four stages provides insights into the contribution of in idual deformation mechanism to the overall deformation behaviour and opens a new way to assess mechanical properties of die-cast magnesium alloys.
Publisher: Elsevier BV
Date: 09-2021
Publisher: MS&T17
Date: 2017
Publisher: Springer Nature Switzerland
Date: 2023
No related grants have been discovered for HUA QIAN ANG.