Review
Materials Science, Multidisciplinary
Gitae Park, Seonghoon Jeong, Changhee Lee
Summary: The paper discusses the effects of adding a large amount of manganese to next-generation advanced high strength steels for automotive applications on microstructural and mechanical characteristics, as well as highlighting issues with weldability. A general strategy is proposed to address the welding problems of advanced high manganese steels from the perspectives of microstructural transitions, plasticity mechanism, and mechanical properties.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Engineering, Manufacturing
M. Shojaee, A. R. H. Midawi, B. Barber, H. Ghassemi-Armaki, M. Worswick, E. Biro
Summary: This study investigated the resistance spot weldability of third-generation advanced high strength steels 3G-980 and 3G-1180, developing weldability windows to determine acceptable welding zones for different welding times, and evaluating optimal weld strengths for different welding conditions. The study also analyzed the hardness changes in different weldment regions and the crack initiation and propagation paths of the interrupted lap-shear specimens for both steels.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Thermodynamics
Jiamin Sun, Klaus Dilger
Summary: The thermal cycle method can significantly reduce calculation time, but its reliability in predicting residual stresses in arc-welded ultra-high strength steels (UHSS) needs further investigation.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Engineering, Mechanical
Xiaofei Guo, Tianyi Li, Zhendong Sheng, Martin Christ, Rahul Sharma, Marcus Soeker, Uwe Reisgen, Wolfgang Bleck
Summary: The study investigated the hydrogen embrittlement sensitivity of S690QL structural steel and X80 pipeline steel under different heat treatment conditions, showing differences in hydrogen content, crack formation mechanisms, and microstructures between the two steel grades. Additionally, the results suggest that a controlled bainitic/martensitic microstructure transformation with designed precipitation hardening could enhance strength and suppress hydrogen mobility.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Amir A. Shirzadi, Chengcong Zhang, Muhammad Zeeshan Mughal, Peiyun Xia
Summary: The aim of this work was to investigate the challenges of bonding Al-Mg alloys and develop a new method for bonding these alloys to steels. The researchers made over 80 attempts using 11 methods to bond the alloys to stainless steels, with varying temperature, pressure, and time. They also tested different interlayers and brazing foils. The results showed that complex processes with multiple interlayers and bonding cycles could achieve high bond strengths, but a simpler process was also developed for practical applications.
Article
Metallurgy & Metallurgical Engineering
Joerg Volpp, Par Jonsen, Anandkumar Ramasamy, Bert Kalfsbeek
Summary: This study presents a method of multi-layer welding high-strength steel to increase the weld metal toughness, and promising interlocking microstructures were found after multiple tempering.
WELDING IN THE WORLD
(2021)
Article
Physics, Multidisciplinary
M. Bakkiyaraj, J. Ananth, V Sivamaran, P. K. Nagarajan
Summary: This article examines the properties of joints fabricated by friction welding (FW) using AA6061-T6 and AA7075 as examples of both similar and dissimilar metals. The effect of heat treatment after welding on the joint's metallurgical characteristics is also investigated. The findings demonstrate that the joint characteristics are enhanced by precipitate nucleation occurring in the joint interface under the heat treatment method of solutionizing heat treatment with synthetic ageing (STA). The tensile strength and microhardness of the joints made with both similar and dissimilar metals are influenced by the STA treatment in different ways.
Article
Engineering, Civil
Omid Ferdowsi Hosseinabadi, Mohammad Reza Khedmati, Mohsen Norouzipoor
Summary: Initial deflections caused by welding have a significant impact on the ultimate strength of welded plate structures. Research on initial welding distortions of steel structures is abundant, but data on fabrication-related initial deflections for aluminium alloys structures is minimal. This study investigates initial deflections caused by welding in aluminium plates used for marine structures and provides statistical analysis for estimating the maximum value of these initial deflections.
THIN-WALLED STRUCTURES
(2021)
Review
Engineering, Industrial
Jin Yang, J. P. Oliveira, Yulong Li, Caiwang Tan, Chenkai Gao, Yixuan Zhao, Zhishui Yu
Summary: The use of multi-material structures is an effective solution to reduce weight and emissions in the automotive industry. However, joining aluminum alloys to steels is challenging due to their mismatched properties. Laser-based processes have been explored to overcome this issue and this review examines the recent achievements and progress in this field, evaluating factors such as joining conditions, filler materials, microstructure, and mechanical properties.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
H. F. Li, P. Zhang, B. Wang, Z. F. Zhang
Summary: In this study, a predictive fatigue crack growth rate law is proposed for the first time, taking into account the effects of both strength and toughness. A quantitative criterion is established to judge the fatigue crack resistance of high-strength steels, providing a unique perspective for the quantitative anti-fatigue design of metallic materials.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
G. G. B. Zaffaroni, O. V. Mishin, U. M. Ciucani, C. Gundlach, J. H. Nordlien, R. Ambat
Summary: This study investigated an aluminium alloy tube produced through linear high frequency welding of a strip with a 3xxx-series alloy core and an embossed inner part with a thin 7xxx-series outer clad layer. It was found that the welding process creates a high-quality joint without observable flaws, with deformed microstructures in the weld region and partially recrystallized heat-affected zones adjacent to it.
MATERIALS CHARACTERIZATION
(2021)
Review
Materials Science, Multidisciplinary
Ashok Kumar Perka, Merbin John, Udaya Bhat Kuruveri, Pradeep L. Menezes
Summary: This review paper presents the latest developments in the study of weldability of advanced high-strength steel (AHSS), focusing on the effects of fusion welding techniques on mechanical properties and microstructure evolution. The article also summarizes the fusion welding techniques used for AHSS welding.
Article
Materials Science, Multidisciplinary
M. Patel, M. Shojaee, O. Sherepenko, A. R. H. Midawi, H. Ghassemi-Armaki, E. Biro
Summary: To protect the third generation of advanced high-strength steels (3G-AHSS) from corrosion, zinc coating is typically applied. However, during resistance spot welding (RSW), the zinc coating can melt and penetrate into grain boundaries, causing liquid metal embrittlement (LME). In this study, a strategy to mitigate LME severity by altering welding parameters was proposed and tested under industrial conditions.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Materials Science, Multidisciplinary
Eva S. Marques, Antonio B. Pereira, Francisco J. G. Silva
Summary: In order to reduce waste and undesirable costs, it is important to establish quality plans that ensure product conformity and address the root causes of welding defects. This study focused on dual phase (DP) steels, which are commonly used in the automotive industry, and developed a quality plan for laser welding DP steel components. The quality plan includes pre-welding, during and post-welding stages, and the mechanical properties of the welded components were also assessed. The findings suggest that DP steel has good weldability except for the softening of the heat affected zone (HAZ) and the growth of martensite in the fusion zone (FZ), and analysis techniques such as finite element method (FEM), visual techniques during welding, and digital image correlation (DIC) for post-weld analysis can help prevent failures.
Article
Optics
Stephanie M. Robertson, Jan Frostevarg, Jonas Nasstrom, Therese Berndtsson, Alexander F. H. Kaplan
Summary: A novel method for controlled dilution experiments was proposed in this paper, analyzing the dilution effects of high-strength steels with specific mass ratios. The materials were melted by a pulsed laser beam to create uniform "Snapshot" nuggets, with hardness showing a negative correlation with dilution rate.
OPTICS AND LASERS IN ENGINEERING
(2021)