Results 11 to 20 of about 80,852 (303)

Maintaining modulus of polypropylene composites with ultra-high low temperature toughness by synergistic branched polyethylene and nucleating agents

open access: yesJournal of Materials Research and Technology, 2023
In this work, the synergistic effect of highly branched polyethylene (HBPEs, s = 1, 2) elastomers featuring dendritic structure and α-type nucleating agents (NA1, NA2) on the toughness and stiffness of block polypropylene (PP–B) was investigated.
Qingyue Shen   +5 more
doaj   +1 more source

Ductile–Brittle Transition Temperature of Epoxy Asphalt Concrete of Steel Bridge Deck Pavement Based on Impact Toughness

open access: yesAdvances in Materials Science and Engineering, 2023
To solve the common low-temperature cracking problem of epoxy asphalt concrete pavement on the steel bridge deck, based on the principle of fracture mechanics and energy method, this paper puts forward the impact toughness as the evaluation index of ...
Shunxian Zhang   +4 more
doaj   +1 more source

Effect of Silicon Content on Carbide Precipitation and Low-Temperature Toughness of Pressure Vessel Steels [PDF]

open access: yes, 2017
Cr – Mn – Mo – Ni pressure vessel steels containing 0.54 and 1.55% Si are studied. Metallographic and fractographic analyses of the steels after tempering at 650 and 700°C are performed.
A Gustafson   +27 more
core   +1 more source

Effect of the morphology of the martensite-austenite phase on fracture of the weld heat affected zone in vanadium and niobium microalloyed steels [PDF]

open access: yes, 2010
In multipass welding, the intercritically reheated coarse grained heat affected zone demonstrates the worst toughness in welded joint, since it contains a high-carbon martensite with some retained austenite, known as M-A phase, which is brittle and ...
Baker, T.N., Li, Y.
core   +1 more source

Impact toughness of multilayer steel materials at low temperatures

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Abstract The results of a number of studies show that there are ways to drastically change the temperature dependence of the impact strength of structural steels, which at first glance have a paradoxical character. It was established that when the test temperature decreases down to cryogenic temperatures, the work of failure of impact ...
D V Vlasova, A I Plokhikh
openaire   +1 more source

Impact modification of poly(caprolactam) by copolymerization with a low molecular weight polybutadiene [PDF]

open access: yes, 1988
Caprolactam and a reactive, low molecular weight polybutadiene were polymerized in an autoclave, followed by post-condensation in the solid state. The rubber concentration was varied (0–30 wt%).
Borggreve, R.J.M., Gaymans, R.J.
core   +4 more sources

Influence of Temperature on Fracture Toughness of Jute Fiber Reinforced Unsaturated Polyester Resin [PDF]

open access: yesEngineering and Technology Journal, 2010
Jute fiber reinforced unsaturated polyester resin composites (J/UP) weresubjected to low velocity impact tests in several Temperatures degree in order to study the effects of temperature variance on the intrinsic fracture toughness Gc impact properties ...
Akram R. Jabur
doaj   +1 more source

EFFECTS OF MO, CR, AND V ADDITIONS ON TENSILE AND CHARPY IMPACT PROPERTIES OF API X80 PIPELINE STEELS [PDF]

open access: yes, 2019
In this study, four API X80 pipeline steels were fabricated by varying Mo, Cr, and V additions, and their microstructures and crystallographic orientations were analyzed to investigate the effects of their alloying compositions on tensile properties and ...
Chang-Hyo Seo   +7 more
core   +1 more source

Improvement in low-temperature toughness of Fe-6.5Mn-0.08C Medium-Mn steel by multi-step heat treatment

open access: yesJournal of Materials Research and Technology, 2023
In this study, a novel multi-step heat treatment method, including intercritical annealing and tempering, is proposed to improve the low-temperature toughness of Fe-6.5Mn-0.08C medium-manganese (Mn) steel.
Seung-Hyeok Shin   +3 more
doaj   +1 more source

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

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