Results 251 to 260 of about 8,971 (305)

Nonmetallic inclusions in important steels

Russian Metallurgy (Metally), 2011
The contamination of 30Cr2Ni4MoV rotor steel with exogenous nonmetallic inclusions is studied. Technological measures intended to decrease the level of contamination of the steel with nonmetallic inclusions and to enhance its quality are recommended.
Yu. V. Sobolev, Yu. M. Batov, S. Yu. Afanas’ev, S. A. Chernyakhovskii, L. T. Afanas’eva, A. G. Vladimirov   +5 more
openaire   +1 more source

Impurities and Nonmetallic Inclusions in Aluminum

JOM, 1965
A study of the effects of aluminum reduction cells, holding furnaces, and three-layer refining cells produced some interesting results.
M. Ishihara, K. Mukai
openaire   +1 more source

Nonmetallic inclusions in steel U10A wire

Metal Science and Heat Treatment, 1990
1. In wire of high-carbon tool steel U10A intended for manufacturing sewing machine needles nonmetallic inclusions of two types are observed: globular and drawn-out in shape. 2. The inclusions have a complex composition and they are not pure graphite. They contain a high amount of carbon.
V. G. Khoroshailov, L. T. Zhukova, E. G. Lashkova, N. B. Tsvetova   +3 more
openaire   +1 more source

Nonmetallic inclusions in alloys of the YuNDK24 type

Metal Science and Heat Treatment, 1970
Different types of inclusions have various effects on the type of microstructure formed. Sulfides are the most active. Corundum and carbides affect the structure to a lesser extent than sulfides.
R. P. Leshchinskaya, G. P. Samartseva
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
openaire   +1 more source

Nature and diagnostics of nonmetallic inclusions in steels

Russian Metallurgy (Metally), 2012
The chemicomineralogical nature of nonmetallic inclusions (NIs) in a number of steel grades prepared by traditional melting, elecroslag refining, and casting has been studied. Suboxides and phases having variable nonstoichiometric compositions are found to comprise nonmetallic inclusions.
V. V. Lunev, V. P. Pirozhkova
openaire   +1 more source

Nonmetallic inclusions in high-speed steel

Metal Science and Heat Treatment of Metals, 1962
1. Various nonmetallic inclusions — oxides, brittle and plastic silicates, and globular bodies — may be encountered in high-speed steel. 2. High-speed steel is primarily contaminated by brittle inclusions the amount of which most frequently corresponds to numbers 3–5 of the TsNIIChM scale.
Ye. A. Smol'nikov, A. S. Badayeva
openaire   +1 more source

Nature of nonmetallic inclusions in alloy 58N

Metal Science and Heat Treatment, 1973
1. Alloy 58N, serially produced and used for manufacturing precision scales, is highly contaminated with nonmetallic inclusions, most of which are titanium nitrides and aluminum oxides. These inclusions make it difficult to obtain a high-quality mirror surface on scales, due to which the accuracy of precision machine tools decreases.
G. A. Tarnovskii, Yu. A. Gratsianov, V. P. Ovcharov, L. I. Yakukhina, S. N. Chirkova, L. P. Kulikova   +5 more
openaire   +1 more source

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
openaire   +1 more source

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