Results 71 to 80 of about 687,390 (408)

Fracture of drilling head pipe connection due to quenching of heat affected zone (HAZ)

Metalurgija, 2015
The drilling head pipe connection is made of quenched and tempered steel 34CrNiMo6. The steel characteristic is high hardenability. Due to unsuitable and untested welding technology the heat affected zone (HAZ) cooling rate after welding surpassed the ...
B. Zorc, M. Bizjak, B. Kosec, A. Nagode
doaj  

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

Advanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach, Oliver Schenk, Valérian Iss, Ali Rajaei, Jiali Zhang, Felix Weber, Christoph Broeckmann   +6 more
wiley   +1 more source

Microstructural investigation of the heat-affected zone of simulated welded joint of P91 steel

Metalurgija, 2013
In the process of testing real components exposed to elevated temperature, it is not possible to neglect cracks. The most significant cracks can be induced by welding, which is applied for joining of structural components.
T. Vuherer, M. Dunđer, Lj. Milović, M. Zrilić, I. Samardžić   +4 more
doaj  

Microstructures of Heat-Affected Zone in Niobium Containing Steels

Materials Transactions, JIM, 1999
In order to understand the effect of niobium additions on the microstructures of the HAZ (heat-affected zone) in mild steels, a plain C-Mn steel (without niobium content) and three niobium containing steels with 0.01, 0.02 and 0.04 mass%Nb, respectively were investigated through simulated HAZ experiments with the heat inputs of 2 × 10 6 , 5 × 10 6 and
Cheng-Yao Huang, Jing-lan Yang, C. S. Chiou   +2 more
openaire   +3 more sources

Mechanical Behavior and Microstructural Changes Associated with Tensile Deformation above the Martensite Start Temperature during Quenching and Subsequent Partitioning of a Low‐Alloy 37SiB6 Steel

Advanced Engineering Materials, EarlyView.
A new experimental setup, incorporating digital image correlation and infrared thermography in combination with inductive‐conductive heating for precise temperature control, is used to analyze the mechanical behavior and microstructural changes of sheet metal under complex thermomechanical test conditions that represent quench and partitioning ...
Christian Illgen, Benjamin Bohne, Sven Winter, Marcus Böhme, Martin F.-X. Wagner   +4 more
wiley   +1 more source

Pengaruh Proses Normalizing Terhadap Nilai Kekerasan Dan Struktur Mikro Pada Sambungan Las Thermite Simillar Baja Uic-54 (Union Internasionale Des Chemins De Fer -54) [PDF]

, 2014
Salah satu penerapan metode pengelasan saat ini adalah pengelasan thermite yang merupakan pengembangan dari proses pengelasan yang umum dilakukan. Penerapannya terutama dalam bidang yang besar seperti rail crane, rel kereta api, gear yang besar, atau ...
Haryadi, G. D. (Gunawan), Ristyanto, A. (Adityo), Umardani, Y. (Yusuf)   +2 more
core  

High-Power Laser Cutting of Steel Plates: Heat Affected Zone Analysis

Advances in Materials Science and Engineering, 2016
The thermal effect of CO2 high-power laser cutting on cut surface of steel plates is investigated. The effect of the input laser cutting parameters on the melted zone depth (MZ), the heat affected zone depth (HAZ), and the microhardness beneath the cut ...
Imed Miraoui, Mohamed Boujelbene, Mouna Zaied   +2 more
doaj   +1 more source

Precipitate Phases of Electron Beam Welded Joint in Superalloy Dissimilar Materials

Journal of Aeronautical Materials, 2018
The precipitate phases of electron beam welded joint in GH141/GH907 superalloy dissimilar materials were studied by scanning electron microscopy (SEM), transmission electron microscope (TEM) and energy dispersive spectrometer (EDS).
LIU Jin, ZHAO Zhiyi
doaj   +1 more source

Advancing Wildfire‐Retardant Materials: Engineering Strategies for Direct and Indirect Suppression

Advanced Engineering Materials, EarlyView.
Here, the evolution, ecological impact, and performance of current fire‐retardant materials and suppression strategies are reviewed, offering an engineering perspective to address existing challenges and propose pathways for the development of more effective, scalable, and sustainable solutions to meet the demands of a changing climate. Wildfires cause
Changxin Dong, Samya Sen, Athena Kolli, Stewart G. Wilson, Eric Andrew Appel   +4 more
wiley   +1 more source

Laser directed energy deposition remanufacturing of LPBF-processed TA15 parts: Hybrid process interface induced microstructure inheritance and mechanical performance

Journal of Materials Research and Technology
The laser additive hybrid manufacturing technology, which combines the precision of Laser Powder Bed Fusion (LPBF) and the flexibility of Laser Directed Energy Deposition (LDED), provides an effective solution for efficient forming and remanufacturing of
Xinyu Shi, Dongdong Gu, Guangjing Huang, Yanze Li   +3 more
doaj   +1 more source