Results 21 to 30 of about 926 (182)

Effect of weld microstructure on the tensile properties and impact toughness of the naval, marine-grade steel weld joints

Journal of Materials Research and Technology, 2022
Pulsed direct current (PDC) gas tungsten arc welding (GTAW) of 12 mm thick plates of naval, marine-grade high strength low alloy steel (HSLA) using ER80S–Ni3 filler metal was investigated. The microstructural characteristics were examined by both optical
Sameera J. Vaikar, Varun Narayanan, Joshy Chellathu George, T.C. Kanish, K. Devendranath Ramkumar   +4 more
doaj   +1 more source

Inclusion Evolution Behavior of Ti-Mg Oxide Metallurgy Steel and Its Effect on a High Heat Input Welding HAZ

Metals, 2018
We have studied here the evolution of inclusions in ladle furnace (LF), Ruhrstahl & Heraeus furnace (RH), and simulated welded samples during Ti-Mg oxide metallurgy treatment and the mechanical properties of the heat-affected zone (HAZ) after high ...
Hao-Nan Lou, Chao Wang, Bing-Xing Wang, Zhao-Dong Wang, Yu-Qian Li, Zi-Gang Chen   +5 more
doaj   +1 more source

Alloy Qualification for Producing Quench and Tempered Plate Steels with Extra‐Heavy Gage

steel research international, EarlyView.
This study develops alloy concepts for ultraheavy steel plates (>100 mm) with ≥690 MPa yield strength. Through dilatometry and Jominy testing, the effects of Mo, Ni, and B on hardenability are quantified. A synergy between 0.5% Mo and 0.5%–1.0% Ni ensures core strength at low cooling rates, while boron microalloying suppresses ferrite and promotes ...
Xabier Azpeitia, Unai Mayo, Nerea Isasti, Eric Detemple, Hardy Mohrbacher, Pello Uranga   +5 more
wiley   +1 more source

Microstructures and Mechanical Properties of Q345B Steel Weld Joint Using Double sided Arc Welding

Journal of Harbin University of Science and Technology, 2018
To solve the problem of incomplete penetration and the welding torch hitting the plate during the welding process of Q345B large thick plate by using robot double-sided arc welding，the method of using no reserved-clearance root was proposed.
GAO Gui-li, MIAO Shen, CAI Chun-bo, ZHANG Hua-jun   +3 more
doaj   +1 more source

Analyses of the Deformability and Chemistry of Non‐Metallic Inclusions in QT Steels With Increased Recycling‐Induced Tramp Element Content

steel research international, EarlyView.
This work uses high‐temperature dilatometry to examine how the tramp elements Cu, Ni, and Sn affect the deformability of non‐metallic inclusions and matrix in quench‐and‐temper steel. Mg‐bearing inclusions deform less than Mg‐free ones. Copper lowers formability. Nickel increases deformability.
Julian Cejka, Isabell Gruber, Gerald Klösch, Susanne Katharina Michelic   +3 more
wiley   +1 more source

Ultrasonic Vibration Assisted Laser Processing: A Hybrid Paradigm for Extreme Surface Enhancement

Rare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Traditional laser processing techniques offer many advantages, but they often encounter limitations such as heat‐affected zones, recast layers, residual tensile stresses, and poor surface finish. The integration of ultrasonic vibration (UV) presents a promising hybrid approach to overcome these challenges by introducing beneficial effects like
Aziz Ul Hassan Mohsan, Xuedao Shu, Hu Zong, Su Zhao, Khamis Essa, Di Tie, Changyong Chen   +6 more
wiley   +1 more source

Flux enhancement with titanium or vanadium oxides addition for superior submerged arc welding of HSLA steel plates

Journal of Advanced Joining Processes
A high-strength low-alloy (HSLA) steel plate of 10 mm thickness underwent submerged arc welding with enhanced fluxes containing additional titanium oxide (TiO2) or vanadium oxide (V2O5).
Majid Malekinia, Habib Hamed Zargari, Kazuhiro Ito, Syamak Hossein Nedjad   +3 more
doaj   +1 more source

Effect of Ti on Microstructure and Mechanical Properties of Vertical EGW Welded Joint of 12MnNiVR Steel [PDF]

Archives of Metallurgy and Materials
Ti-containing and Ti-free 12MnNiVR steels were welded separately by vertical EGW welding with a heat input of 100 kJ/cm. The microstructure, precipitates and inclusions of the welded joints were studied by means of optical microscope, scanning electron ...
Jiaqing Tang, Jie Li, Kun Liu
doaj   +1 more source

Elucidating the heat input on CGHAZ microstructure and its irregular effect on impact toughness for a novel V–N microalloying weathering steel

Journal of Materials Research and Technology, 2023
This study investigated the effect of heat inputs on coarse-grained heat affected zone (CGHAZ) microstructure and impact properties of a novel vanadium (V) and nitrogen (N) microalloyed weathering steel via a Gleeble™ system, revealing the metallurgical ...
Bing Hu, Genhao Shi, Qiuming Wang, Liyang Zhao, Huibing Fan, Yucan Tang, Wei Wang, Qingfeng Wang, Riping Liu   +8 more
doaj   +1 more source

Mechanism of the Transition from Bainite to Acicular Ferrite

Materials Transactions, JIM, 1991
The factors controlling the transition from a microstructure consisting of austenite grain boundary nucleated sheaves of bainite, to one containing intragranularly nucleated plates of acicular ferrite are explored. The work confirms that in weld metals containing inclusions, the transition from bainite to acicular ferrite can be stimulated of the prior
Babu, S. S., Bhadeshia, H. K. D. H.
openaire   +2 more sources