Results 31 to 40 of about 2,758 (292)

Soldagem mig com corrente alternada MIG CA [PDF]

, 2008
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Mecânica.Com o objetivo de desenvolver a tecnologia de soldagem MIG CA, foram envidados esforços para criar soluções tecnológicas que ...
Santos, Túlio Fernandes dos
core  

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Study on hydrogen assisted cracking susceptibility of HSLA steel by implant test

Defence Technology, 2016
DMR-249A is an indigenously developed high strength low alloy steel for Indian ship building industry for making ship-hull and is extensively used in the construction of war ships and submarines.
Gopa Chakraborty, R. Rejeesh, S.K. Albert   +2 more
doaj   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

Advanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira, Marcella Gaute Cavalcante Xavier, Abdoul‐Aziz Bogno, Piter Gargarella, José Eduardo Spinelli   +4 more
wiley   +1 more source

Microstructure and Mechanical Properties of Braze Welded Joints of Copper with Austenitic Steel Made by CMT Method [PDF]

Archives of Metallurgy and Materials, 2019
This paper outlines issues associated with gas-shielded braze welding of CU-ETP copper with austenitic steel X5CrNi18-10 (1.4301) using a consumable electrode.
T. Wojdat, P. Kustroń, A. Margielewska, M. Stachowicz   +3 more
doaj   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

PENETRATION ABILITY OF THE ARC WITH NON-CONSUMABLE ELECTRODE (REVIEW)

IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY, 2023
Based on the analysis of literature data, the paper shows the influence of the sharpening angle and the diameter of the blunting of the working section of a non-consumable electrode, the composition of the protective gas, the shape of the cutting edges on the depth and area of penetration of the base metal.
A.V. SAVINOV, O.A. POLESSKIY, V.I. LYSAK, P.P. KRASIKOV, A.A. CHUDIN, D.A. MURUGOV   +5 more
openaire   +1 more source

Peculiarities of laser arc consumable electrode welding of high-strength aluminium alloys

, 2009
Рассмотрено влияние интенсивности испарения элементов основного металла и электродной проволоки, а также состава защитной газовой среды на прохождение лазерного излучения к свариваемому металлу при гибридной сварке алюминиевых сплавов.
Машин, В.С., Пашуля, М.П., Сиора, А.В., Шелягин, В.Д., Хаскин, В.Ю., Бернацкий, А.В.   +5 more
core   +2 more sources

Numerical simulation of the system of power source?consumable-electrode arc

, 2004
Предложено математическое описание системы источник питания-дуга с плавящимся электродом. Исследованы условия статического существования системы с учетом теплофизических характеристик параметров и изменения вылета электрода.A mathematical description of ...
Сидорец, В.Н., Жерносеков, А.М.   +1 more
core   +2 more sources

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source