Results 31 to 40 of about 100 (96)

Influence of Ausforming Treatment of 0.4wt%C Steel Modified With Nb on the Microstructure and Hardness Properties

open access: yesTikrit Journal of Engineering Sciences, 2012
In the present work the relationship between the microstructure and the hardness of the Steel both with and without an addition of niobium was studied. Investigation by direct observation using optical microscopy was carried out. The purpose of this work
Hiam Razzak Kadhum
doaj   +1 more source

SANS and neutron diffraction study of ausformed EUROFER97/2 ferritic/martensitic steel

open access: yesNuclear Materials and Energy, 2020
Small-angle neutron scattering (SANS) and neutron diffraction have been utilized for micro-structural characterization of Eurofer97/2 heats submitted to thermo-mechanical treatments, with the aim to investigate macroscopic material volumes and to ...
R. Coppola   +4 more
doaj   +1 more source

Development of innovative steels and thermo-mechanical treatments for DEMO high operating temperature blanket options

open access: yesNuclear Materials and Energy, 2018
Among the options currently taken into account for the realization of the first DEMO reactor there are the “helium-cooled” and the “dual coolant” breeding blanket.
C. Cristalli   +5 more
doaj   +1 more source

Mechanical properties of several newly produced RAFM steels with Tungsten content in the range of 2 wt%

open access: yesNuclear Materials and Energy, 2020
The contribution of ENEA together with Rina-CSM to the Eurofusion programme “WPMAT-Advanced Seels” deals with the development of innovative RAFM steels able to withstand the critical temperatures typical of the different operational environments foreseen
C. Cristalli   +3 more
doaj   +1 more source

Ausforming and Marforming of a Cu-Zn26.3-Al3.9 Shape Memory Alloy [PDF]

open access: yesLe Journal de Physique IV, 1997
A copper-based shape memory alloy with Ms below ambient temperature is investigated in four different conditions: 1) As betatized. 2) Ausformed at 800 C and at 780 C, subsequently quenched. 3) Marformed by different amounts of true plastic deformation at temperatures below Mf. 4) Mechanically cycled (ausformed and as betatized state).
Spielfeld, J., Hornbogen, E., Franz, M.
openaire   +3 more sources

Thermomechanical treatment of austempered ductile iron [PDF]

open access: yesChina Foundry, 2007
The production of lightweight ferrous castings with increased strength properties became unavoidable facing the serious challenge of lighter aluminum and magnesium castings. The relatively new ferrous casting alloy ADI offers promising strength prospects,
A. A. Nofal   +2 more
doaj  

Fatigue Properties of Ausformed 12-Cr Stainless Steel

open access: yesJournal of the Society of Materials Science, Japan, 1974
In this report, the fatigue properties of an ausformed 12-Cr stainless steel have been clarified by means of S-N curves, crack growth rates and microscopic observations of propagating cracks and fractured surfaces.The results obtained are as follows:(1) The endurance limits of a plane specimen are improved in proportion to the reduction ratio of ...
Koshiro KUROKI   +2 more
openaire   +2 more sources

Effect of low-temperature ausforming on hydrogen-induced delayed fracture of high-strength bolt steel

open access: yes工程科学学报
High-strength bolts are widely used in construction machinery, steel structures, bridges, automobiles, and other industrial sectors owing to their high load-bearing capacity and connection efficiency.
Yixuan XU   +5 more
doaj   +1 more source

Influence of Ausforming on Hardenability of Steel 09MnNb for L485QS Sour Sevice Pipeline

open access: yesTeshugang, 2019
To study the effect of ausforming on hardenability in steel 09MnNb used for L485QS sour service pipeline, different ausforming processes were performed and the subsequent hardenabilitis and microstructures were tested.
方剑, 黄彦, 唐应波
doaj  

Improving strength and ductility via ausforming combined with austempering through deformation-induced bainite refinement

open access: yesJournal of Materials Research and Technology
The refinement of bainitic ferrite laths is one of the most critical ways to improve the combination of strength and ductility. However, low-temperature bainitic transformations in the microstructural evolution of carbide-free bainite in high-carbon ...
Jianhua Li   +5 more
doaj   +1 more source

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