Results 31 to 40 of about 40,994 (307)

Fractographic Analysis Of Selected Boron Steels Subjected To Impact Testing

open access: yesArchives of Metallurgy and Materials, 2015
In this paper dynamic properties of low-alloy boron steels – Hardox 500, B27 and HTK 900H in delivered state (after hardening and tempering) are considered.
Dudziński W.   +2 more
doaj   +1 more source

Tensile behavior, microstructural evolution, and deformation mechanisms of a high Nb-TiAl alloy additively manufactured by electron beam melting

open access: yesMaterials & Design, 2023
To evaluate the tensile behavior, microstructural evolution, and deformation mechanisms of Ti-45Al-8Nb alloy additively manufactured by electron beam melting, uniaxial tensile experiments were performed at a constant strain rate of 2.5 × 10−4 s−1 at ...
Hong Zhang   +8 more
doaj   +1 more source

Ductile to brittle transition of an A508 steel characterized by Charpy impact test, part I., experimental results

open access: yes, 2005
International audienceThis study is devoted to the ductile–brittle transition behavior of a French A508 Cl3 (16MND5) steel. Due to its importance for the safety assessment of PWR vessels, a full characterization of this steel with Charpy V-notch test in ...
Besson, Jacques   +3 more
core   +3 more sources

Plastic deformation of dense nanocrystalline yttrium oxide at elevated temperatures [PDF]

open access: yes, 2012
Nanocrystalline yttrium oxide, Y2O3 with 110 nm average grain size was plastically deformed between 800 ◦C and 1100 ◦C by compression at different strain rates and by creep at different stresses. The onset temperature for plasticity was at 1000 ◦C. Yield
Chaim, Rachman   +4 more
core   +2 more sources

Ductile to brittle transition of an A508 steel characterized by Charpy impact test, part II., Modeling of the Charpy transition curve

open access: yes, 2005
International audienceA finite element simulation of the Charpy test is developed in order to model the ductile to brittle transition curve of a pressure vessel steel. The material (an A508 steel) and the experimental results are presented in a companion
Besson, Jacques   +3 more
core   +4 more sources

Elevated-temperature impact toughness of Mg–(Gd, Y)–Zr alloy [PDF]

open access: yes, 2013
The Charpy impact results for Mg–10Gd–3Y–0.5Zr and Mg–11Y–5Gd–2Zn–0.5Zr alloys at various temperatures showed that Mg–10Gd–3Y–0.5Zr was more sensitive to temperature. The increase in impact toughness with temperature was related to the blunt crack-tip at
Anyanwu   +24 more
core   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

open access: yesAdvanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

The Influence of Temperature on the Fracture Toughness and Fracture Mechanism of Ferritic Nodular Cast Iron

open access: yesMetals
Nodular Cast Iron (NCI, also known as ductile iron) is widely used in important components such as crankshafts for automotive engines and internal combustion engines, as well as storage and transportation containers for spent fuel in nuclear power plants,
Guobin Duan   +4 more
doaj   +1 more source

AN ANALYSIS OF IMPACT TESTING OF HIGH STRENGTH LOW-ALLOY STEELS USED IN SHIP CONSTRUCTION

open access: yesBrodogradnja, 2021
Brittle damages have been examined widely since welding became common practice when it comes to carrying out robust structures. Welded structure of the ship hull has to be continuous.
Srđan Bulatović   +3 more
doaj   +1 more source

Nonmetallic impurities improve mechanical properties of vapor-deposited tungsten [PDF]

open access: yes, 1972
Mechanical properties of vapor deposited tungsten are improved by selective incorporation of various nonmetallic impurities. Addition of trace quantities of carbon, nitrogen, or oxygen can significantly increase both low and high temperature yield ...
Chin, J.   +2 more
core   +1 more source

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