Results 21 to 30 of about 511,855 (348)

The Far-Ultraviolet Spectra of TW Hya. II. Models of H2 Fluorescence in a Disk [PDF]

, 2004
We measure the temperature of warm gas at planet-forming radii in the disk around the classical T Tauri star (CTTS) TW Hya by modelling the H2 fluorescence observed in HST/STIS and FUSE spectra.
Abgrall H., Brian E. Wood, Casali M. M., Christopher M. Johns‐Krull, Gregory J. Herczeg, Jeff A. Valenti, Jeffrey L. Linsky, Johns-Krull C. M., Lynden-Bell D., Richter M. J., Valenti J. A.   +10 more
core   +2 more sources

Investigation of the Flow Behaviour of Martensitic Steel at Elevated Temperatures Via Uniaxial Tensile Tests [PDF]

Archives of Metallurgy and Materials
In recent years, advanced high strength steels have been the main choice of automobile manufacturers due to their excellent strengths and decent formability. In this study, the forming behaviour of a martensitic steel (MART 1200) at elevated temperatures,
N. Sen, T. Civek, O. Elkoca, E. Çevik
doaj   +1 more source

Constitutive model and compaction equation for aluminum alloy powder during compaction

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
The deformation mechanisms in powder compaction can be described by a constitutive model, which is the cornerstone for modeling the powder compaction process by finite element simulation.
Fangli ZOU, Shangyu HUANG, Mengcheng ZHOU, Yu LEI, Shiwei YAN, Jifa ZHANG, Bin WANG   +6 more
doaj   +1 more source

Review of warm forming of aluminum–magnesium alloys

Journal of Materials Processing Technology, 2008
Abstract Aluminum–magnesium (Al–Mg) alloys (5000 series) are desirable for the automotive industry due to their excellent high-strength to weight ratio, corrosion resistance, and weldability. However, the formability and the surface quality of the final product of these alloys are not good if processing is performed at room temperature.
Toros, Serkan, Ozturk, Fahrettin, Kacar, Ilyas   +2 more
openaire   +3 more sources

Warm Spray Forming of Ti-6Al-4V [PDF]

Journal of Thermal Spray Technology, 2013
Warm spray (WS) is a modification of high-velocity oxy-fuel spraying, in which the temperature of the supersonic gas flow generated by the combustion of kerosene and oxygen is controlled by diluting the combustion flame with an inert gas such as nitrogen.
Molak, R. M., Araki, H., Watanabe, M., Katanoda, H., Ohno, N., Kuroda, S.   +5 more
openaire   +1 more source

The chemistry of C3 & Carbon Chain Molecules in DR21(OH) [PDF]

, 2012
(Abridged) We have observed velocity resolved spectra of four ro-vibrational far-infrared transitions of C3 between the vibrational ground state and the low-energy nu2 bending mode at frequencies between 1654--1897 GHz using HIFI on board Herschel, in ...
Aikawa, Araya, Argon, B. Mookerjea, Bernst, Beuther, Bisschop, C. Joblin, Cazaux, Cernicharo, Chandler, Comito, Csengeri, de Graauw, E. Herbst, Fish, G. E. Hassel, Galazutdinov, Garrod, Garrod, Gendriesch, Gerin, Gerin, Giesen, Haffner, Hasegawa, Hassel, Hassel, Hinkle, J. Cernicharo, J. H. Black, J. Krełowski, J. R. Goicoechea, J. Stutzki, K. M. Menten, M. De Luca, M. Gerin, M. Kaźmierczak, M. Schmidt, Maier, Mangum, Mangum, Mauersberger, Mookerjea, Motte, Müller, Oka, P. F. Goldsmith, Pety, Pilbratt, Pineau des Forêts, Plambeck, Radi, Richardson, Roelfsema, Roueff, Rygl, Sakai, Sakai, Sakai, Schmuttenmaer, Schneider, T. Csengeri, T. Giesen, White, Wilson, Zapata, Ádámkovics, Öberg, Öberg, Öberg   +70 more
core   +5 more sources

Study of Formability of Brass Sheet Metal Under Different Temperature Conditions [PDF]

E3S Web of Conferences, 2023
In the present work focus devoted to the results obtained from uniaxial tensile test were utilized to analyze flow stress behavior of brass under different orientation, temperature and strain rate conditions and the study of forming limit diagrams for ...
Singh V. Dharma, Hussain M. Manzoor, Singh Swadesh Kumar   +2 more
doaj   +1 more source

Effect of Process Parameters on Formability of a AZ31 Magnesium Alloy Thin-Walled Cylindrical Part Formed by Multistage Warm Single-Point Incremental Forming

Frontiers in Materials, 2020
Magnesium alloys have many distinguished advantages; therefore, they are more and more popularly used in lightweight design of automotive and aviation manufacturing industries.
Zhi-guo An, Dong Yan, Jian-jian Qie, Zai-liang Lu, Zheng-yuan Gao   +4 more
doaj   +1 more source

Thermo-mechanical Forming of Al–Mg–Si Alloys: Modeling and Experiments [PDF]

, 2010
In an ongoing quest to realize lighter vehicles with improved fuel efficiency, deformation characteristics of the material AA 6016 is investigated. In the first part of this study, material behavior of Al–Mg–Si sheet alloy is investigated under different
Boogaard, A.H. van den, Ghosh, M., Kurukuri, S., Miroux, A.   +3 more
core   +2 more sources

Warm Hydroforming Process under Non-Uniform Temperature Field for Magnesium Alloy Tubes

Metals, 2021
The warm tube hydroforming (WTHF) process of lightweight materials such as magnesium alloy contributes to a remarkable weight reduction. The success of the WTHF process strongly depends on the loading path with internal pressure and axial feeding and ...
Toshiji Morishima, Ken-Ichi Manabe
doaj   +1 more source