Results 121 to 130 of about 4,496,230 (391)

Hot deformation behaviors and microstructure characteristics of Cr–Mo–Ni–V steel with a banded structure

High Temperature Materials and Processes
On a Gleeble-3800 thermal simulator, the hot deformation behavior of Cr–Mo–Ni–V steel was studied, with the designed deformation temperature varying from 900 to 1,200°C and the strain rate in the range of 0.01–10 s−1.
Du Yunfei, Bai Rui, Wang Bo, Zhang Li, Li Guodong   +4 more
doaj   +1 more source

Investigation on Hot Deformation Behavior and Hot Processing Map of BSTMUF601 Super-Alloy

Metals, 2016
Isothermal compression tests of BSTMUF601 super-alloy in the temperature range of 950 °C–1200 °C and at the strain rates of 0.2 s−1, 5 s−1, 10 s−1 were performed on a Gleeble-1500D thermo-mechanical simulator.
Chaoyang Sun, Xun Zuo, Yu Xiang, Jing Yang   +3 more
doaj   +1 more source

Hot wire anemometer measurements in the unheated air flow tests of the SRB nozzle-to-case joint [PDF]

Hot-Wire Anemometer measurements made in the Solid Rocket Booster (SRB) nozzle-to-case joint are discussed. The study was undertaken to glean additional information on the circumferential flow induced in the SRB nozzle joint and the effect of this flow ...
Ramachandran, N.
core   +1 more source

Working fluid selection for organic Rankine cycle power generation using hot produced supercritical CO2 from a geothermal reservoir [PDF]

, 2019
Geothermal heat mining simulations using supercritical CO2 (sCO2) were performed in this research. Working fluid selection criteria for power generation using sCO2 from a geothermal reservoir are then presented for subcritical, superheated and ...
Banerjee, A, Levy, EK, Pan, C, Pan, L, Romero, CE, Rubio-Maya, C, Wang, X   +6 more
core   +1 more source

Powder Metallurgy and Additive Manufacturing of High‐Nitrogen Alloyed FeCr(Si)N Stainless Steel

Advanced Engineering Materials, EarlyView.
The alloying element Nitrogen enhances stainless steel strength, corrosion resistance, and stabilizes austenite. This study develops austenitic FeCr(Si)N steel production via powder metallurgy. Fe20Cr and Si3N4 are hot isostatically pressed, creating an austenitic microstructure.
Louis Becker, Felix Radtke, Jonathan Lentz, Santiago Benito, Christoph Broeckmann, Sebastian Weber   +5 more
wiley   +1 more source

Hot deformation behavior and flow-stress anomaly of 5Cr9Si3 valve steel at elevated temperatures

工程科学学报, 2015
The hot deformation behavior of 5Cr9Si3 valve steel was investigated by hot working simulation test at different hot working parameters. When the deformation temperature increases from 850 to 900℃ or from 1000 to 1100℃, the peak stress decreases; but ...
WU Yun-sheng, PENG Yi-chao, ZHANG Mai-cang, ZHENG Lei, DONG Jian-xin   +4 more
doaj   +1 more source

Pengaruh Kecepatan Fluida Terhadap Nilai Efektivitas pada Heat Exchanger Tipe Shell and Tube (The Effect of Fluid Flow Velocity to Determine the Effectiveness of Heat Exchanger Shell and Tube) [PDF]

, 2016
As a device to exchange heat from hot fluid to colder fluid, a heat exchanger is supposed to have high effectiveness. Theoretically, the increase of fluid rate would increase the effectiveness.
PUSPITA DEWI, MEIKE
core  

Lectures on Cosmic Inflation and its Potential Stringy Realizations

, 2007
These notes present a brief introduction to Hot Big Bang cosmology and Cosmic Inflation, together with a selection of some recent attempts to embed inflation into string theory.
Acharya B S, Achucarro A, Alabidi L Lyth D H, Allahverdi R, Avgoustidis A Cremades D Quevedo F, Balasubramanian V, Barnaby N, Barnaby N Cline J M, Baumann D Dymarsky A Klebanov I McAllister L Steinhardt P, Baumann D Dymarsky A Klebanov I R Maldacena J McAllister L Murugan A, Baumann D Dymarsky A Klebanov I R McAllister L, Becker K, Berg M, Berg M Haack M Pajer E, Blanco-Pillado J J, Blanco-Pillado J J, Blanco-Pillado J J, Brandenberger R H Nayeri A Patil S P Vafa C, Brax Ph van de Bruck C Davis A C Davis S C Jeannerot R Postma M, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P, Burgess C P Holman R Hoover D, C P Burgess, Chen C M, Chen P, Chen X G, Chen X G, Chen X Tye S H, Chialva D, Cline J M, Conlon J P, Conlon J P, Conlon J P, Conlon J P Quevedo F, Copeland E J, Cremades D, Cremades D, Cremades D, Dasgupta K, Dasgupta K, Dasgupta K Hsu J P Kallosh R Linde A Zagermann M, de Carlos B, Denef F, Denef F Douglas M R Florea B Grassi A Kachru S, Denef F Douglas M R Florea B Grassi A Kachru S, DeWolfe O, Dimopoulos S Kachru S McGreevy J Wacker J G, Dodelson S, Dudas E, Dvali G, Dvali G, Dvali G R Shafi Q Solganik S, Enqvist K Mether L Nurmi S, Firouzjahi H, Freivogel B, Garcia-Bellido J, Gomez-Reino M, Green M B, Greene B Weltman A, Grishchuk L P, Herdeiro C, Hsu J P, Hsu J P, Iizuka N Trivedi S P, Jones N, Kachru S, Kachru S, Kallosh R, Kallosh R, Kallosh R, Kallosh R, Kaloper N, Kaloper N, Kinney W H, Kofman L, Kolb E W, Koyama F Tachikawa Y Watari T, Krause A Pajer E, Lalak Z, Lalak Z Langlois D Pokorski S Turzynski K, Lalak Z Ross G G Sarkar S, Langfelder P, Leblond L, Liddle A R, Linde A, Linde A, Linde A, Linde A, Linde A D, Linde A D, Lyth D H, McAllister L, Mukhanov V, Peebles P J E, Peiris H V Baumann D Friedman B Cooray A, Pilo L, Polarski D, Polchinski J, Polchinski J Efthimiou C Greene B, Postma M, Quevedo F, Ryden B, Saltman A, Shandera S E Tye S H, Simon J Jimenez R Verde L Berglund P Balasubramanian V, Spergel D N, Steinhardt P J, Tasinato G, Terning J, Tye S H H, Villadoro G, Weinberg S, Weinberg S, Westphal A, Westphal A, Zweibach B   +125 more
core   +1 more source

Nanoparticle‐Coated X2CrNiMo17‐12‐2 Powder for Additive Manufacturing—Part II: Processability by Powder Bed Fusion of Metals Using a Laser Beam

Advanced Engineering Materials, EarlyView.
In this manuscript, the processability of X2CrNiMo17‐12‐2 powder coated with silicon carbide, silicon, and silicon nitride nanoparticles is investigated. The amount of nanoparticles varies from 0.25 to 1 vol%. By coating the powder feedstock material with nanoparticles, an enlargement of the process window and an increase in the build rate are achieved.
Nick Hantke, Tim R. Brocksieper, Arne Lüddecke, Tobias Grimm, Arno Kwade, Jan T. Sehrt   +5 more
wiley   +1 more source

Nanoparticle‐Coated X2CrNiMo17‐12‐2 Powder for Additive Manufacturing – Part I: Surface, Flowability, and Optical Properties of SiC, Si, and Si3N4 Coated Metal Powders

Advanced Engineering Materials, EarlyView.
Herein, silicon‐based nanoparticle coatings on X2CrNiMo17‐12‐2 metal powder are presented. The coating process scale, process parameters, nanoparticle size (65–200 nm) as well as the coating amount are discussed regarding powder properties. The surface roughness affects the flowability, while reflectance depends on the coating material and surface ...
Arne Lüddecke, Nick Hantke, Harald Zetzener, Jan T. Sehrt, Arno Kwade   +4 more
wiley   +1 more source