Specification for Sintered Aluminum Structural Parts

2021 ◽  
Author(s):  
Author(s):  
Alexander S. Lelekov ◽  
Anton V. Shiryaev

The work is devoted to modeling the growth of optically dense microalgae cultures in natural light. The basic model is based on the idea of the two-stage photoautotrophic growth of microalgae. It is shown that the increase in the intensity of sunlight in the first half of the day can be described by a linear equation. Analytical equations for the growth of biomass of microalgae and its macromolecular components are obtained. As the initial conditions, it is assumed that at the time of sunrise, the concentration of reserve biomass compounds is zero. The simulation results show that after sunrise, the growth of the microalgae culture is due only to an increase in the reserve part of the biomass, while the structural part practically does not change over six hours. Changes in the ratio of the reserve and structural parts of the biomass indicate a change in the biochemical composition of cells.


Alloy Digest ◽  
1983 ◽  
Vol 32 (2) ◽  

Abstract ALUMINUM C355.0 is a high-purity casting alloy that responds to an age-hardening heat treatment. It can be cast successfully by the sand and permanent-mold processes. Its castings characteristics are excellent and it is recommended for pressure-tight castings. It has good resistance to corrosion. Its applications include propeller gear boxes, crankcases and stressed structural parts in aircraft. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-243. Producer or source: Various aluminum companies.


Alloy Digest ◽  
1998 ◽  
Vol 47 (7) ◽  

Abstract Alcoa 7075 alloy has very high strength and is used for highly stressed structural parts. The T7351 temper offers improved stress-corrosion cracking resistance. The alloy’s strength level equals or exceeds mild steels. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as machining and surface treatment. Filing Code: AL-350. Producer or source: ALCOA Wire, Rod & Bar Division.


Alloy Digest ◽  
1999 ◽  
Vol 48 (12) ◽  

Abstract Kaiser Aluminum Alloy 7049 has high mechanical properties and good machinability. The alloy offers a resistance to stress-corrosion cracking and is typically used in aircraft structural parts. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fatigue. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: AL-365. Producer or source: Tennalum, A Division of Kaiser Aluminum.


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