Effect of certain chemical elements and heat treatment on damping capacity of manganese-copper alloys

1976 ◽  
Vol 8 (12) ◽  
pp. 1485-1489 ◽  
Author(s):  
B. S. Chaikovskii ◽  
G. Ya. Yaroslavskii ◽  
L. A. Bocharova ◽  
O. T. Bashta ◽  
V. V. Matveev
Keyword(s):  
Heat Treatment ◽  
Chemical Elements ◽  
Copper Alloys ◽  
Damping Capacity ◽  
Manganese Copper

About the possibility of identification of articles from steels, aluminum, copper and alloys on their basis on the expanded micro-impurity elemental composition

2021 ◽  
pp. 51-56
Author(s):  
Yu. B. Sazonov ◽  
D. Yu. Ozherelkov ◽  
R. Sh. Latypov ◽  
E. E. Gorshkov
Keyword(s):  
Spectral Analysis ◽  
Chemical Composition ◽  
Elemental Composition ◽  
Chemical Elements ◽  
Copper Alloys ◽  
Minimal Amount ◽  
Elementary Composition ◽  
Geometric Size ◽  
The Common

Possibility of determination of the fragments and articles made of different grades of steel aluminium and copper alloys and their affiliation to the common melt was examined via the methods of photoelectric spectral analysis based on composition of micro-impurities. Chemical elements with micro-impurities were revealed; they allow to determine affiliation of metal fragments to one melt. Ultimately possible deviations of micro-impurities within one melt were obtained. The technique allowing to establish affiliation of fragments to the common melt based on their elementary composition of micro-impurities with minimal amount of measurements was suggested based on the obtained results. The minimal geometric size of a sample available for analysis was determined; it allows to classify the examined fragments to one melt based on the results of investigation of expanded elementary composition of micro-impurities. Practical opportunities of this technique were displayed on the example of the alloys with different chemical composition.

Effect of Aluminum Concentration on Damping Capacity during Annealing in AZ-Series Magnesium Alloy

2018 ◽  
Vol 941 ◽  
pp. 1178-1182
Author(s):  
Jae Hyeon Ahn ◽  
Ju Ho Kwak ◽  
Chang Yong Kang ◽  
Kwon Hoo Kim
Keyword(s):  
Heat Treatment ◽  
Magnesium Alloy ◽  
Annealing Time ◽  
Static Recrystallization ◽  
Rolling Reduction ◽  
Aluminum Concentration ◽  
Damping Capacity ◽  
Solute Content ◽  
Microstructure Change ◽  
Annealing Conditions

In a previous study, the damping capacity gradually increased with increasing annealing time and temperature in AZ31. Also, at damping capacity test under similar conditions, AZ61 with a higher solute content showed a more rapid microstructure change than AZ31. In this study, it was investigated damping capacity on various aluminum concentration conditions in order to damping capacity that was influenced by microstructure and solute content. Three types such as pure Mg, AZ31 and AZ61 alloy of specimens were rolled at 673K with a rolling reduction of 30%, respectively. The annealing were conducted at various temperature and time. In this study, static recrystallization was occurred under all annealing conditions. The hardness gradually decreased until 60 minutes after the heat treatment. All annealing conditions, the damping capacity gradually increased with increasing annealing time and temperature. Especially, damping capacity and C1value were increased with a decreasing of solute content.

scholarly journals The effects of the heat treatment on the microstructure of Inconel 625/steel bimetal joint obtained by explosive welding

2018 ◽  
Vol 242 ◽  
pp. 01007 ◽  
Author(s):  
R. Kosturek ◽  
M. Wachowski ◽  
L. Śnieżek ◽  
M. Gloc ◽  
U. Sobczak
Keyword(s):  
Heat Treatment ◽  
Electron Microscope ◽  
Diffusion Zone ◽  
Explosive Welding ◽  
Chemical Elements ◽  
Scanning Transmission Electron Microscope ◽  
Grain Structure ◽  
Inconel 625 ◽  
Joint Zone ◽  
Scanning Transmission

In this investigation steel P355NH was successfully clad with Inconel 625 through the method of explosive welding. Explosively welded bimetal was subjected to the two separated heat treatment processes: stress relief annealing (at 620oC for 90 minutes) and normalizing (at 910oC for 30 minutes). In order to identify the microstructure of the joint and to investigate the influence of the heat treatment on it, the light and scanning electron microscope observations and microhardness analysis have been performed. In order to investigate the diffusion zone microstructure the scanning transmission electron microscope observation have been performed. It was stated that obtained joint has characteristic wavy-shape geometry with the presence of the melted zones and severe deformed grains of both joined materials. Strengthening of materials in joint zone was established with microhardness analysis. In both of the heat treatments the changes in the grain structure have been observed. The normalizing heat treatment has the most significant impact on the microstructure of the joint as well as the concentration of the chemical elements in the joint zone. It was reported that due to normalizing the diffusion zone has been formed together with precipitates in the joint zone.

Metallographic method for manganese-copper alloys

Metallography ◽  
1981 ◽  
Vol 14 (4) ◽  
pp. 329-334 ◽  
Author(s):  
N.F. Kennon ◽  
D.P. Dunne ◽  
L.A. Middleton
Keyword(s):  
Copper Alloys ◽  
Metallographic Method ◽  
Manganese Copper

Fracture Analysis for Pitman Shaft of Automotive Steering Gear

2011 ◽  
Vol 197-198 ◽  
pp. 1604-1607
Author(s):  
Ze Jie Zhou ◽  
Xiao Ming Wang
Keyword(s):  
Heat Treatment ◽  
Chemical Elements ◽  
Fracture Analysis

The fractographic appearance, microstructure, chemical elements and hardness of the pitman shaft of automotive steering gear were analyzed. The fracture is induced by improper heat treatment and non-taking anti-carburization measures on thread part. Some feasible measures, including copperizing, coating anti-carburization paint and keeping localized manufacture allowance, were proposed for preventing the occurrence of similar fractures.

A note on an effect of sodium monensinate supplements on the level of some chemical elements in the organs and muscle of feedlot steers

1985 ◽  
Vol 40 (3) ◽  
pp. 511-513 ◽  
Author(s):  
J. Mašek ◽  
J. Gilka ◽  
H. Dočekalovà
Keyword(s):  
Chemical Elements ◽  
Cadmium Content ◽  
Monovalent Cations ◽  
Feedlot Steers ◽  
Polyvalent Cations ◽  
Copper Zinc ◽  
Manganese Copper

ABSTRACTIn muscle and livers of steers given a diet with sodium monensinate a significant decrease in cadmium content was observed. The concentration of manganese, copper, zinc, lead and iron in the analysed organs varied inconsistently. It seems from the results that, in tissues, monensinate influences the metabolism not only of monovalent cations but of polyvalent cations as well.

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