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Metals
Special Issues
Modeling, Characterization and Controlling of Residual Stress in Metal Components
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Modeling, Characterization and Controlling of Residual Stress in Metal Components

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Failure Analysis".

Deadline for manuscript submissions: closed (30 June 2024) | Viewed by 3475

Special Issue Editor

Dr. Hai Gong

E-Mail Website
Guest Editor
1. Light Alloy Research Institute, Central South University, Changsha 410083, China
2. State Key Laboratory of High-Performance Complex Manufacturing, Central South University, Changsha 410083, China
Interests: plastic forming of aluminum alloy; measurement, modeling and characterization of residual stress; machining deformation control; non-destructive testing

Special Issue Information

Dear Colleagues,

Product quality is affected by deformation, crack, dimensional stability, fatigue strength, and service life reduction caused by residual stress. In the whole process of component manufacturing and service, the evolution of stress state is accompanied by the change of microstructure, which is affected by the material, processing technology, shape, service conditions, and other factors of the component itself. The evolution process of stress is very complex. It is incredibly important to obtain the evolution law and distribution characteristics of residual stress accurately to improve product performance. This Special Issue focuses on the modeling, characterization, and control of residual stress in the manufacturing process of metal materials and components. The purpose is to improve the control level of residual stress of metal components, achieve near zero residual stress control of metal components, and comprehensively improve product quality by attracting many experts and scholars to exchange ideas.

Potential topics for this Special Issue on metal residual stress include but are not limited to the following aspects:

  • Residual stress in metal plastic forming manufacturing;
  • Residual stress of heat treatment;
  • Residual stress in additive manufacturing;
  • Residual stress in machining;
  • Component deformation and control;
  • Residual stress and service performance.

Dr. Hai Gong
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • residual stress
  • heat treatment
  • forming manufacturing
  • additive manufacturing
  • machining deformation
  • service performance

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Published Papers (2 papers)

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Research

19 pages, 8512 KiB  
Article
Semi-Analytical Solution Model for Bending Deformation of T-Shaped Aviation Aluminium Alloy Components under Residual Stress
by Ning Li, Shouhua Yi, Wanyi Tian and Qun Wang
Metals 2024, 14(4), 486; https://doi.org/10.3390/met14040486 - 22 Apr 2024
Viewed by 1048
Abstract
Structures composed of aviation aluminium alloys, characterized by their limited rigidity and thin-walled configurations, frequently exhibit deformation after processing. This paper presents an investigation into T-shaped components fabricated from pre-stretched 7075-T7451 aviation aluminium alloy sheets, examining the effects of residual stress and the [...] Read more.
Structures composed of aviation aluminium alloys, characterized by their limited rigidity and thin-walled configurations, frequently exhibit deformation after processing. This paper presents an investigation into T-shaped components fabricated from pre-stretched 7075-T7451 aviation aluminium alloy sheets, examining the effects of residual stress and the geometrical parameters of T-shaped components on their deformational behavior. A semi-analytical model, developed to elucidate the bending deformation of T-shaped components subjected to residual stress, was validated through finite element analysis and empirical cutting experiments. The experimental results revealed that the bending deformation deflection of the T-shaped specimen was 0.920 mm, deviating by a mere 0.011 mm from the prediction provided by the semi-analytical model, resulting in an inconsequential error margin of 1.2%. This concordance underscores the precision and accuracy of the semi-analytical model specifically designed for T-shaped components. Moreover, the model’s simplicity and ease of application make it an effective tool for predicting the bending deformation of thin-walled T-shaped components under a range of residual stresses and dimensional variations, thereby demonstrating its significant utility in engineering applications. Full article
(This article belongs to the Special Issue Modeling, Characterization and Controlling of Residual Stress in Metal Components)
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15 pages, 11329 KiB  
Article
Effects of Cold Expansion on Residual Stress of 7050 Aluminium Alloy Frame Forging
by Hai Gong, Xiaoliang Sun, Tao Zhang and Hua Tang
Metals 2023, 13(4), 732; https://doi.org/10.3390/met13040732 - 8 Apr 2023
Cited by 3 | Viewed by 1938
Abstract
Regulation of residual stress in a component is the key to improving its service performance. A cold expansion method was proposed for reducing the residual stress in 7050 aluminium alloy curved frame forging after quenching. The effect of the cold expansion method on [...] Read more.
Regulation of residual stress in a component is the key to improving its service performance. A cold expansion method was proposed for reducing the residual stress in 7050 aluminium alloy curved frame forging after quenching. The effect of the cold expansion method on the residual stress and equivalent plastic strain distribution of the 7050 aluminium alloy curved frame forging was investigated. The results showed that the maximum residual stress at the center thickness was reduced from 153 MPa to 94 MPa after the cold expansion, while it decreased from 283 MPa to 120 MPa at the surface with the highest stress reduction rate of 86.2%. The stress uniformity in the final forming region of the forging was improved. The equivalent plastic strain of the forging gradually decreases from the center to each side along the diameter of the expanded hole in cold expansion. The stress reduction effect matched with the distribution of equivalent plastic strain. The surface stress of the forging measured by x-rays diffraction (XRD) method was in agreement with the simulation results, and the reliability of the numerical model was verified. The cold expansion method can effectively reduce the quenched residual stress in curved frame forging. Full article
(This article belongs to the Special Issue Modeling, Characterization and Controlling of Residual Stress in Metal Components)
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