Results 41 to 50 of about 301,912 (309)

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

A Study on Non-Carbon Steelmaking at High Temperature

open access: yesTeshugang, 2011
As compared with carbon metallurgy, a concept of non-carbon metallurgy to combine solar energy, wind power and metallurgy technology is advanced to expound the idea of non-carbon metallurgy with photo-wind complement each other.
侯明山   +4 more
doaj  

Effects of Eutectic Modification and Grain Refinement on Microstructure and Properties of PM AlSi7 Metallic Foams

open access: yesMetals, 2019
For AlSi7 foams, microstructure modification by variation of solidification rates and addition of Sr, B and TiB2/TiAl3 was investigated and its transfer to powder metallurgical metal foaming processes demonstrated.
Dirk Lehmhus   +4 more
doaj   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

Study on the Contact Conditions of Powder Metallurgy Gear

open access: yesJixie chuandong, 2017
With the development of powder metallurgy technology in recent years,the applications of powder metallurgy gear becoming more and more widely. But the porosity structure of material may results in larger gear tooth bending deformation of powder ...
Fang Cheng, Li Xinmin
doaj  

Stone and pottery assemblages of the Late Bronze Age of the Ishkinino archaeological microdistrict

open access: yesАрхеология евразийских степей
This publication presents the results of a traceological study of stone tools and a technical and technological analysis of the pottery assemblage from the Ishkinovka settlement and the Ishkinino mine, located in the Gai district of the Orenburg region ...
Elena A. Karavashkina, Dmitry V. Semin
doaj   +1 more source

Ultralight reactive metal foams produced as structural shapes in space: System design [PDF]

open access: yes, 1984
This autonomous experiment for foaming metals in space involved: (1) payload support structure; (2) furnace and foaming apparatus; (3) electronic controls; (4) battery power; and (5) metallurgy.
Cocks, F. H.   +2 more
core   +1 more source

Preparation and evaluation of properties of cast metallic foams with regular inner structure [PDF]

open access: yes, 2017
Lately we encounter still more new applications of metallic foams, as well as possible methods of their manufacture. These metallic materials have specific properties, such as large rigidity at low density, in some cases high thermal conductivity ...
Elbel, Tomáš   +3 more
core   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Mine et métallurgie du fer à haute altitude dans les Alpes du Sud-Ouest

open access: yesPallas, 2013
Prospections carried out in the valleys and on the summits of South-Western Alps made it possible to complete the mining and metal working map of the Alps, confirming the existence of patterns of high altitude exploitation.
Denis Morin, Patrick Rosenthal
doaj   +1 more source

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