Results 211 to 220 of about 962 (261)
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Bearing Steels: The Rating of Nonmetallic Inclusion
1975Description The symposium on Rating of Nonmetallic Inclusion in Bearing Steels was presented at May Committee Week of the American Society for Testing and Materials held in Boston, Mass., 22-24 May 1974. Committee A01 on Steel, Stainless Steel, and Related Alloys, Subcommittee A01.28 on Bearing Steels, sponsored the symposium. J. J.
JJC Hoo, PT Kilhefner, JJ Donze
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Characterization of Nonmetallic Inclusions in 18CrNiMo7-6
Metallurgical and Materials Transactions B, 2018The 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 +5 more
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Nature and diagnostics of nonmetallic inclusions in steels
Russian Metallurgy (Metally), 2012The 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
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Nature of nonmetallic inclusions in alloy 58N
Metal Science and Heat Treatment, 19731. 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 +5 more
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Hydrogen embrittlement of steel with nonmetallic inclusions
Metal Science and Heat Treatment, 19731. 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 and Rolling Contact Fatigue
1975Rolling 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 +3 more
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Solidification, Segregation, and Nonmetallic Inclusions
2018Abstract 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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Role of Nonmetallic Inclusions in Fatigue, Pitting, and Corrosion Fatigue
Corrosion, 1996A study was conducted of the effect of nonmetallic inclusions on the fatigue and corrosion fatigue resistance of a high-strength steel in 0.6 M sodium chloride (NaCl) solutions. Results indicated that angular calcium-aluminate inclusions played an important role in introducing cracks during air fatigue cycling; however, sulfide inclusions appeared to ...
Wang, Y, Akid, R
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Effect of nonmetallic inclusions on properties of cast steel
Soviet Materials Science, 1968The result's of a study of the effect of nonmetallic inclusions on physicochemical and electrochemical properties of steel 45L are reported. A new (linear) method of determining the content of nonmetallic inclusions in steel, which makes it possible to determine also the shape of inclusions, was used.
Yu. A. Shul'te +5 more
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Method for evaluating the content of nonmetallic inclusions in steels
Metal Science and Heat Treatment, 1995Methods for evaluating the content of nonmetallic inclusions in ShKh 15, ShKH5SG, and ShKh20SG steels used for rolling bearings are considered. These methods can be applied to other steels used for various parts that fail in operation due to fatigue spalling.
O. H. Chermenskii, V. V. Kovalev
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