Results 211 to 220 of about 606 (262)

Hydrogen embrittlement of steel with nonmetallic inclusions

Metal Science and Heat Treatment, 1973
1. Instead of the ductile cracks observed in the metal free of hydrogen, facets of quasibrittle fracture perpendicular to the tensile force are observed around nonmetallic inclusions in samples saturated with hydrogen. 2. Cracks of quasibrittle fracture are formed around large crystalline inclusions but not around sulfides in steel ...
V. P. Krylov, N. I. Vorob'eva
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Nonmetallic Inclusions in Low-Alloy Tube Steel

Metallurgist, 2005
Study of the nonmetallic phase of unalloyed tube steel 10G2FB has shown that the steel contains four types of nonmetallic inclusions. Relatively fine (no coarser than 12 µm) calcium aluminates of variable composition are the main type of nonmetallic inclusion (NI) in such steel.
A. V. Dub, N. V. Barulenkova, T. V. Morozova, S. V. Efimov, V. N. Filatov, S. D. Zinchenko, A. M. Lamukhin   +6 more
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Nonmetallic inclusion distribution in centrifugal semifinished tubes

Metal Science and Heat Treatment, 1988
The investigation of the nonmetallic inclusion distribution along the length of the tube was made in the center portion of specimens with an area of 400 mm/sup 2/ cut across the cross section of the casting. It is shown that in centrifugally cast semifinished tubes of 15Kh1M1F steel the nonmetallic inclusions accumulate primarily at the inner surface ...
G. S. Mirzoyan, I. A. Pavperova, E. K. Ivan'ko   +2 more
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Eliminating corrosive nonmetallic inclusions from pipe steel

Steel in Translation, 2014
Measures to optimize the production of corrosion-resistant steel have been introduced at OAO Severskii Trubnyi Zavod. They ensure that the steel’s content of corrosive nonmetallic inclusions of the first and second type is no more than 2 mm−2. The measures were developed on the basis of research on the morphology and composition of nonmetallic ...
S. P. Burmasov, A. V. Murzin, L. E. Dresvyankina, V. V. Meling   +3 more
openaire   +1 more source

Characterization of Nonmetallic Inclusions in 18CrNiMo7-6

Metallurgical and Materials Transactions B, 2018
The detrimental effect of nonmetallic inclusions (NMIs) in steels on, e.g., fatigue lifetime is well known. In order to increase the durability and safety of materials and components, inclusion control and a deep understanding of inclusion formation are essential.
Johannes Gleinig, Anja Weidner, Jens Fruhstorfer, Christos G. Aneziris, Olena Volkova, Horst Biermann   +5 more
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Nonmetallic Inclusions and Rolling Contact Fatigue

1975
Rolling contact fatigue tests were carried out on an angular contact ball bearing test rig at a low unit pressure (Po = 260 kp/mm2). The results show a sound “relative correlation” between the rolling contact fatigue and the content of nonmetallic inclusions.
K Böhm, H Schlicht, O Zwirlein, R Eberhard   +3 more
openaire   +1 more source

Evolution of Nonmetallic Inclusions During Spring Steel Treatment

Metallurgist, 2016
Features of nonmetallic inclusion formation and evolution in the course of treating spring steel of 54SiCr6 (60S2KhA) grade are studied. It is established that the majority of nonmetallic inclusions (NI) present within steel are complex oxides of the composition SiO2–MnO–Al2O3–CaO–MgO, at whose surface during steel crystallization and cooling as a rule
A. B. Stepanov, A. I. Zaitsev, B. A. Sarychev, A. Yu. Dzyuba, A. V. Koldaev   +4 more
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Titanium-bearing nonmetallic inclusions in manganese ferroalloys

Steel in Translation, 2010
Petrographic data indicate the chemical and mineralogical composition, topography, and morphology of various titanium-bearing nonmetallic inclusions of the type TiS, MnS-TiS, TiS-α-SiC, and TiS-MnS-TiC, as well as nonstoichiometric titanium sulfides and titanium carbonitrides.
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Solidification, Segregation, and Nonmetallic Inclusions

2018
Abstract Many of the structural characteristics of steel products are a result of changes that occur during solidification, particularly volume contractions and solute redistribution. This chapter discusses the solidification process and how it affects the quality and behaviors of steel.
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Nonmetallic inclusions in vacuum-treated austenitic stainless steel

Steel in Translation, 2015
The nonmetallic phase in 08X18H10T and 03X18H10 vacuum-treated austenitic stainless steel is investigated by means of a scanning electron microscope. The composition of the nonmetallic inclusions in cast samples of metal from the casting ladle, the vacuum unit, and the continuous-casting machine and samples of cold-rolled sheet (thickness 1.2 mm) is ...
O. K. Tokovoi, D. V. Shaburov
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