Results 21 to 30 of about 1,670 (230)

Research on residual stress and hydrogen diffusion of X80 pipeline welded joint

Frontiers in Materials, 2023
Hydrogen enrichment induced by pipeline welding residual stress is a key issue affecting the safe service of hydrogen pipelines. In order to explore the influence of welding residual stress on hydrogen diffusion and the effect of heat treatment, an X80 ...
Jinghong Xue, Jinghong Xue, Andun Cheng, Chenxu Bai, Li Ji   +4 more
doaj   +1 more source

Abnormal Grain Growth in the Heat Affected Zone of Friction Stir Welded Joint of 32Mn-7Cr-1Mo-0.3N Steel during Post-Weld Heat Treatment

Metals, 2018
The abnormal grain growth in the heat affected zone of the friction stir welded joint of 32Mn-7Cr-1Mo-0.3N steel after post-weld heat treatment was confirmed by physical simulation experiments.
Yijun Li, Ruidong Fu, Yan Li, Yan Peng, Huijie Liu   +4 more
doaj   +1 more source

Assessing Corrosion Fatigue Characteristics of Dissimilar Material Weld between Alloy617 and 12Cr Steel Using Buttering Welding Technique

Metals, 2018
In this study, dissimilar material welding between Alloy617 and 12Cr steel was performed using the buttering welding technique on the 12Cr steel side in order to increase the weldability.
Jeong Ho Hwang, Ju Hwa Lee, Hafiz Waqar Ahmad, Seung Woo Ha, Dong Ho Bae, Henok Yilma Kebede   +5 more
doaj   +1 more source

Microstructural Evolution Due to One Thermal Cycle in a Superduplex Stainless Steel ASTM A890/A890M - Grade 6A in the As-Weld and Post-Weld Heat Treatment Conditions [PDF]

Materials Research, 2019
During welding of the superduplex stainless steels are exposed to thermal cycles, allowing precipitation of deleterious phases as well as unbalance as the ferrite and austenite phases.
Clélia Ribeiro de Oliveira, Eloá Lopes Maia, Solange Tamara da Fonseca, Marcelo Martins, Julian Arnaldo Avila, Paulo Roberto Mei   +5 more
doaj   +1 more source

Effect of Post-Weld Heat Treatment on -20℃ Impact Toughness of Heat Affected Coarse Grain Zone of Steel 07MnCrMoVR

Teshugang, 2020
The microstructure and properties of the heat affected coarse grain zone of steel 07MnCrMoVR with post¬weld heat treated at 460 ~ 660 °C for 2 h are analyzed by means of optical microscope, scanning microscope, transmission electron microscope and impact
冯路路, 乔文玮, 鲁修宇, 周峰
doaj  

Microstructural and mechanical evolution of a high-entropy superalloy during friction stir welding and post-weld heat treatment

Materials & Design
The effects of pre-weld and post-weld heat treatment on the microstructure and mechanical properties of friction stir welded Al0.2Co1.5CrFeNi1.5Ti0.3 high-entropy superalloy were investigated.
Kiyoaki T. Suzuki, Poying Hsieh, Shun Tokita, Yutaka S. Sato, Tzu-Yang Chiang, Chewei Tsai   +5 more
doaj   +1 more source

Effect of Shortened Post Weld Heat Treatment on the Laser Welded AA7075 Alloy

Metals, 2022
The present study provides an overview of previous studies on the welding of the AA7075-T6 aluminum alloy, followed by an investigation of the influence of short-time solution annealing on the mechanical properties of the weld. Conventional laser welding
Timon Suckow, Stephan Völkers, Ezgi Bütev Öcal, Markus Grass, Stefan Böhm, Peter Groche   +5 more
doaj   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

In-situ X-ray difraction analysis of reverted austenite in supermartensitic stainless steel weld deposits

Forces in Mechanics, 2022
To improve the mechanical properties in supermartensitic stainless steel weld deposits, suitable post weld heat treatments (PWHT) are required, since these properties are controlled by the resulting microstructure.
S. Zappa, J.J. Hoyos, L. Tufaro, H. Svoboda   +3 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source