Results 31 to 40 of about 2,514 (216)
Mechanical properties of tungsten alloys with Y2O3 and titanium additions [PDF]
, 2011 In this research the mechanical behaviour of pure tungsten (W) and its alloys (2 wt.% Ti–0.47 wt.% Y2O3 and 4 wt.% Ti–0.5 wt.% Y2O3) is compared. These tungsten alloys, have been obtained by powder metallurgy.
A. Martín +11 more
core +5 more sources
Metals, 2023 The present study investigates the relative effect of B and N concentrations and the austenitization temperature on the microstructure and mechanical properties (tensile and Charpy impact) of modified 9Cr-1Mo (P91) steels.
Ravindran Rejeesh +6 more
doaj +1 more source
TEM Observation of Dislocation Emission from a Crack at DBTT in Si
MATERIALS TRANSACTIONS, 2001 Emission of dislocations from a crack which propagated at the ductile-brittle transition temperature (DBTT) in Si was observed by combined use of focused-ion beam (FIB) technique and transmission electron microscopy (TEM). At the wake of a DBTT crack many dislocation lines and dislocation loops were observed, while a wake of a precrack introduced at ...
null Suprijadi, Hiroyasu Saka
openaire +2 more sources
Metals, 2021 This study investigated the low-temperature fracture behavior of an 80-mm-thick low-carbon steel plate welded by submerged arc. The relationship between impact absorbed energy and ductility–brittle transition temperature (DBTT) based on the ...
Byeong Chan Choi +7 more
doaj +1 more source
Materials & DesignA simple Rice-Ashby type model for ductile–brittle transition temperature (DBTT) of body-centered cubic (bcc) complex concentrated alloys (structures) is presented. The effect of accumulation of dislocation density on DBTT is also analyzed.
Satish I. Rao +5 more
doaj +1 more source
Continuous-time perpetuities and time reversal of diffusions [PDF]
, 2016 We consider the problem of estimating the joint distribution of a continuous-time perpetuity and the underlying factors which govern the cash flow rate, in an ergodic Markov model. Two approaches are used to obtain the distribution.
Kardaras, Constantinos, Robertson, Scott
core +3 more sources
Nuclear Engineering and Technology, 2020 Y-containing CLAM steels were melted via vacuum induction melting and electroslag remelting. In this study, the evolution, microstructure, and mechanical properties of the alloy inclusions (ESR-1 (0 wt.% Y), ESR-2 (0.016 wt.% Y) and ESR-3 (0.042 wt.% Y))
Guoxing Qiu +5 more
doaj +1 more source
Procedia Structural Integrity, 2016 AbstractIn this paper, an engineering framework to transfer the lower bound fracture toughness between different temperatures in the ductile–to–brittle (DBTT) temperature region is proposed and validated for 0.55% carbon steel using 0.5TSE(B) specimens. The framework requires only stress–strain curve for different temperatures as experimental data. The
Meshii, Toshiyuki, Yamaguchi, Teruhiro
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Study of mechanisms of crack formation on tungsten composites using the three-point method
Vìsnik Harkìvsʹkogo nacìonalʹnogo unìversitetu ìmenì V.N. Karazìna. Serìâ: fìzika., 2022 The aim of this study was evaluated the ductile-to-brittle transition temperature (DBTT) and microstructure of miniaturized tungsten composites by three point bending method.
M.V. Lebedieva +3 more
doaj +1 more source
Nuclear Materials and EnergyThe study of chromium alloys, including the low-alloyed BX-2 K alloy and Cr-Fe alloys alloyed with Zr, Y, Al, Mn, Mo additions, after irradiation at temperatures ranging from 400 to 1000 °C and neutron fluences of (2.0 − 9.3) × 1026 m−2 (E > 0.1 MeV ...
Vladimir Chakin +8 more
doaj +1 more source