Results 11 to 20 of about 43,266 (192)

Improved Coal Pulverization Method Using the Embrittlement due to Cracks Generated in Pores of Coal [Translated]†

open access: yesKONA Powder and Particle Journal, 2014
Pulverized coals produced by a rounding method have a wide range of particle sizes. Even though the coals have the same Hardgrove Grindability Index (HGI), some coals are difficult to pulverize by the rounding method.
Tetsuo Ono
doaj   +1 more source

Effect of Postweld Heat Treatment on Microstructure and Properties of Thick S11306 Ferritic Stainless Welded Joints

open access: yesMetals, 2022
This study investigated the evolution of microstructure and mechanical properties of 25 mm thick S11306 ferritic stainless steel welded joints during Post weld heat treatment (PWHT) by a series of tests, including the optical microscope observation ...
Xiaodong Hu   +4 more
doaj   +1 more source

Highly processable bulk metallic glass-forming alloys in the Pt–Co–Ni–Cu–P system [PDF]

open access: yes, 2004
Highly processable bulk metallic glass alloys in the Pt–Co–Ni–Cu–P system were discovered. The alloys show low liquidus temperature below 900 K, excellent processability with low critical cooling rate reflecting in maximum casting thicknesses in quartz ...
Johnson, William L., Schroers, Jan
core   +1 more source

The impact of hydrogen on the ductility loss of bainitic Fe–C alloys [PDF]

open access: yes, 2016
The influence of hydrogen on the mechanical properties of generic lab-cast Fe-C bainitic alloys is studied by tensile tests on notched samples. The bainitic microstructure is induced in a 0.2% C and 0.4% C Fe-C alloy by an appropriate heat treatment. The
Depover, Tom   +2 more
core   +1 more source

Erosion Resistance and Particle Erosion-Induced Tensile Embrittlement of 3D-Selective Laser Melting Inconel 718 Superalloy

open access: yesMetals, 2019
We used selective laser melting (SLM) Inconel 718 (coded AS) to carry out three heat treatment processes: (1) double aging (coded A), (2) solid solution + A (coded SA), (3) homogenization + SA (coded HSA) in order to investigate the effects of ...
Jun-Ren Zhao   +2 more
doaj   +1 more source

Pure Hydrolysis of Polyamides: A Comparative Study

open access: yesChemistry, 2023
Polyamides (PAs) undergo local environmental degradation, leading to a decline in their mechanical properties over time. PAs can experience various forms of degradation, such as thermal degradation, oxidation, hydrothermal oxidation, UV oxidation, and ...
Mathis Mortensen Brette   +3 more
doaj   +1 more source

Lead induced intergranular fracture in aluminum alloy AA6262 [PDF]

open access: yes, 2003
The influence of lead on the fracture behavior of aluminum alloy AA6262 is investigated. Under certain conditions, the mode of fracture changes from transgranular microvoid coalescence to an intergranular mechanism. Three different intergranular fracture
Hosson, J.Th.M. De,, Wouters, O.,
core   +3 more sources

Role of disordered bipolar complexions on the sulfur embrittlement of nickel general grain boundaries [PDF]

open access: yes, 2018
Minor impurities can cause catastrophic fracture of normally ductile metals. Here, a classic example is represented by the sulfur embrittlement of nickel, whose atomic-level mechanism has puzzled researchers for nearly a century.
Hu, Tao   +4 more
core   +3 more sources

Measurement Uncertainty and Representation of Tensile Mechanical Properties in Metals

open access: yesMetals, 2021
The International Organization for Standardization Technical Committee for Metallic Materials—Tensile Testing stated in 2011 that temperature and strain rate variations would induce a change in the results of tensile tests, termed as the measurement ...
Tingdong Xu, Kai Wang, Shenhua Song
doaj   +1 more source

Scanning Kelvin Probe for Detection in Steel of Locations Enriched by Hydrogen and Prone to Cracking

open access: yesCorrosion and Materials Degradation, 2023
Hydrogen, due to corrosion processes, can degrade high strength steels (HSS) through embrittlement and stress corrosion cracking mechanisms. Scanning Kelvin probe (SKP) mapping of surface potential was applied, to visualize the locations with an ...
Andrei Nazarov   +2 more
doaj   +1 more source

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