Results 11 to 20 of about 40,760 (208)

Temperature-dependent deformation and fracture properties of low-carbon martensitic steel in different stress states

Journal of Materials Research and Technology, 2023
The temperature-dependent ductile-brittle transition (DBT) in low-carbon martensitic steel is investigated in different stress states. To capture the effects of the stress state, tensile tests have been performed with flat specimens and three-point ...
Zhen Zhang, Fuhui Shen, Hanqing Liu, Markus Könemann, Sebastian Münstermann   +4 more
doaj   +1 more source

Reference toughness – a pragmatic tool to estimate ductile-brittle transition temperatures

Procedia Structural Integrity, 2018
Abstract Recent advances show that tough as-quenched ultra-high-strength steels in fully and partially martensitic conditions demand proper control of the effective coarse grain size, which is the key microstructural parameter controlling the toughness in the ductile-brittle transition region.
Pallaspuro, S. (Sakari), Mehtonen, S. (Saara), Kömi, J. (Jukka), Zhang, Z. (Zhiliang), Porter, D. (David)   +4 more
openaire   +3 more sources

Depth‐Dependent Slow Earthquakes Controlled by Temperature Dependence of Brittle‐Ductile Transitional Rheology

Geophysical Research Letters, 2023
The discovery of slow earthquakes illuminates the existence of a strange depth dependence of seismogenesis, which contradicts the common understanding of smooth brittle/seismic‐ductile/aseismic transition as going deeper into the earth's surface layers ...
Ryosuke Ando, Kohtaro Ujiie, Naoki Nishiyama, Yasushi Mori   +3 more
doaj   +1 more source

Use of the small punch test for the estimation of ductile-to-brittle transition temperature shift of irradiated steels

Nuclear Materials and Energy, 2021
The small punch test is evaluated as a screening procedure for irradiation embrittlement of reactor pressure vessel steels. In particular, the correlation between ductile-to-brittle transition temperatures obtained from this small specimen test technique
E. Altstadt, F. Bergner, M. Houska
doaj   +1 more source

Effect of Texture on the Ductile–Brittle Transition Range and Fracture Mechanisms of the Ultrafine-Grained Two-Phase Ti-6Al-4V Titanium Alloy

Metals, 2023
In this work, the technique of equal-channel angular pressing (ECAP) that enables producing bulk billets was used to form a UFG structure in Ti-6Al-4V alloy. A subsequent warm upsetting simulates die forging and the production of a part.
Iuliia M. Modina, Grigory S. Dyakonov, Alexander V. Polyakov, Andrey G. Stotskiy, Irina P. Semenova   +4 more
doaj   +1 more source

Machine-Learning-Based Composition Analysis of the Stability of V–Cr–Ti Alloys

Journal of Nuclear Engineering, 2023
Machine learning methods allow the prediction of material properties, potentially using only the elemental composition of a molecule or compound, without the knowledge of molecular or crystalline structures.
Katsuaki Tanabe
doaj   +1 more source

Studies of the formation and distribution of cracks and various defects on the heated tungsten plate surface during pulsed plasma flux impact

Nuclear Materials and Energy, 2023
In this work, cracking of the surface of a tungsten plate was studied using a PW-7 pulsed plasma accelerator. The surface of the tungsten plate was exposed at an energy density and plasma flux duration of 1.1 MJ/m2 and 200 μs, respectively.
M.K. Dosbolayev, A.B. Tazhen, A.N. Kholmirzayev, Y.A. Ussenov, T.S. Ramazanov   +4 more
doaj   +1 more source

Experimental study of the brittle–ductile transition in hot cutting of SG iron specimens [PDF]

, 2013
http://www.sciencedirect.com/science/article/pii/S0924013612002579The present paper investigates the brittle-ductile transition (BDT) of the primary shear zone during cutting of spheroidal graphite (SG) iron in the austenitization temperature range ...
EL MANSORI, Mohamed, FOUILLAND-PAILLE, Laurence   +1 more
core   +6 more sources

Some Aspects of Structural Modeling of Damage Accumulation and Fracture Processes in Metal Structures at Low Temperature

Modelling and Simulation in Engineering, 2016
The problem of brittle fracture of structures at low temperature conditions connected to damage accumulation and ductile-brittle transition in metals. The data for locomotive tire contact impact fatigue and spalling are presented.
Valeriy Lepov, Albert Grigoriev, Valentina Achikasova, Kyunna Lepova   +3 more
doaj   +1 more source

Simulation of seismic waves at the earth's crust (brittle–ductile transition) based on the Burgers model [PDF]

Solid Earth, 2014
The earth's crust presents two dissimilar rheological behaviors depending on the in situ stress-temperature conditions. The upper, cooler part is brittle, while deeper zones are ductile.
J. M. Carcione, F. Poletto, B. Farina, A. Craglietto   +3 more
doaj   +1 more source