Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Semen Naumovich Lekakh"'
Autor:
Ronald J. O'Malley, Mario F. Buchely, Vivek Thapliyal, Anil Kumar, X. Wang, Semen Naumovich Lekakh, Shouvik Ganguly, K. Chandrashekhara
Publikováno v:
Journal of Manufacturing Processes. 64:285-293
Continuously cast near net shape blanks have been widely used in industry owing to the benefit of producing items close to final shape. However, for complicated shaped blanks, such as I and H beams, using near net shape blanks is not enough to preven
Autor:
Semen Naumovich Lekakh, Larry Godlewski, Ronald J. O'Malley, Asebi Bofah, Richard Osei, Mei Li
Publikováno v:
Oxidation of Metals. 95:251-268
Silicon and molybdenum (SiMo) alloyed cast irons with spherical graphite are used for exhaust manifolds for service at high temperatures in air and combustion atmospheres containing water vapor. Analysis of degraded surfaces of in-service manifolds i
Publikováno v:
Metallurgical and Materials Transactions B. 52:393-404
The structure, phase, and composition of scale formed on a continuously cast steel slab during reheating depend on intrinsic factors (steel chemistry, microstructure, and as-cast surface condition) and extrinsic parameters (temperature, time, composi
Publikováno v:
Metallurgical and Materials Transactions B. 51:2542-2554
High silicon molybdenum-alloyed cast irons (SiMo) with spherical graphite are widely used for cast thin-wall exhaust manifolds, worked in high-temperature oxidation environment; therefore, prevention of surface degradation during service is important
Publikováno v:
International Journal of Metalcasting. 15:874-888
High alloyed Si ferritic ductile irons can offer potential benefits because they combine high strength, ductility at room temperature, and low oxidation rate at high temperature. However, there is one known drawback and that is these cast irons have
Publikováno v:
Oxidation of Metals. 94:251-264
High SiMo cast iron components in automotive exhaust systems are exposed to high-temperature oxidation over time. Quantitative analysis of formed oxide scale is therefore important for the assessment of a component durability. The brittle nature of m
Publikováno v:
ISIJ International. 60:782-791
Experiment and simulation of static softening behavior of alloyed steel during round bar hot rolling
Autor:
David C. Van Aken, Eduardo Scheid, G. W. Ridenour, Ronald J. O'Malley, X. Wang, Semen Naumovich Lekakh, Mario F. Buchely, K. Chandrashekhara
Publikováno v:
Journal of Manufacturing Processes. 52:281-288
Static softening is a crucial mechanism during the hot rolling of steel to relax residual stress and strain, refine microstructure, and improve mechanical properties. In this study, double hit tests with varying temperature, strain rate, interpass ti
Autor:
Semen Naumovich Lekakh
Publikováno v:
International Journal of Metalcasting. 14:1078-1089
Nonmetallic inclusions play a vital role for graphite nodule nucleation in cast iron with spheroidal graphite (SGI). Therefore, knowledge about composition of heterogeneous nuclei is practically important and can be used to control solidification in
Publikováno v:
Metallurgical and Materials Transactions B. 52:1918-1920