Results 91 to 100 of about 1,439,881 (195)

The effect of aging time on mechanical and microstructure properties of aa6061 joints welded by gas tungsten arc welding [PDF]

open access: yes, 2018
This research examines the influence of heat treatment on mechanical properties and microstructure of AA6061 aluminium alloy welded with butt groove method, by using Gas Tungsten Arc Welding (GTAW) method.
Ahmad, R
core  

The Effect of Priming on Germination and Enzyme Activity of Sesame (Sesamum indicum L.) Seeds After Accelerated Aging [PDF]

open access: yes, 2013
Maximum germination percentage achieves immediately after harvesting and gradually de#creases with storage time. Aging is one of the key factors in plant yield loss especially in vegetables.
Tabatabaei S. A.
core  

Reversion phenomena of Cu-Cr alloys [PDF]

open access: yes
Cu-Cr alloys which were given various aging and reversion treatments were investigated in terms of electrical resistivity and hardness. Transmission electron microscopy was one technique employed.
Kobayashi, S., Nagata, K., Nishikawa, S.
core   +1 more source

studi pengaruh quench dan quench aging pada aluminium hasil pengecoran terhadap sifat fisis dan mekanis [PDF]

open access: yes, 2007
Tujuan penelitian ini adalah untuk mengetahui prosentase kimia unsur penyusun utama aluminium paduan, harga kekerasan, fase penyusun struktur mikro dan harga impact dari aluminium hasil pengecoran pada spesimen : tanpa treatment, quench dan quench ...
ANTORO , TRI
core  

Reversibility of Age-related Oxidized Free NADH Redox States in Alzheimer's Disease Neurons by Imposed External Cys/CySS Redox Shifts. [PDF]

open access: yes, 2019
Redox systems including extracellular cysteine/cystine (Cys/CySS), intracellular glutathione/oxidized glutathione (GSH/GSSG) and nicotinamide adenine dinucleotide reduced/oxidized forms (NADH/NAD+) are critical for maintaining redox homeostasis. Aging as
Brewer, Gregory J   +3 more
core  

Aging Kinetics and Activation Energy-Based Modeling of Electrical Conductivity Evolution in a Cu–4Ti Alloy

open access: yesMetals
The aging behavior and electrical performance evolution of Cu–4Ti alloy were systematically investigated through experimental characterization and theoretical modeling. A series of solution and aging treatments were conducted at temperatures ranging from
Guojin Sun   +4 more
doaj   +1 more source

Heat treatment study of the SiC/Ti-15-3 composite system [PDF]

open access: yes
The oxidation and aging behaviors of a continuous fiber SiC/Ti-15V-3Cr-3Sn-3Al composite (SiC/Ti-15-3) were investigated. The aging characteristic of the composite were compared with those of the unreinforced Ti-15-3 matrix material, which was processed ...
Gabb, Timothy P.   +2 more
core   +1 more source

A new nickel-base wrought superalloy for applications up to 1033 K (1400 F) [PDF]

open access: yes, 1974
Alloy was melted from high purity raw materials and cast ingots extruded at 1422 K. Material was hot rolled to 0.013 m diameter bar stock. Partial solution heat-treatment followed by aging produced structure of fine gamma prime precipitate reinforcing ...
Black, H. L.   +3 more
core   +1 more source

Effect of Aging at Different Temperatures on Microstructure Evolution of 347H Heat-Resistant Steel-Welded Joints

open access: yesMetals
This study used 347H heat-resistant steel as the base material and systematically investigated the microstructural evolution and second-phase precipitation in typical regions during welding and aging processes.
Jun Xiao   +4 more
doaj   +1 more source

Microstructure and tensile properties of Al-12Zn-2Mg-0.5Cu-0.3Sc ultra-high strength aluminum alloy

open access: yesCailiao gongcheng
According to the maximum solid solubility of Zn, Mg, Cu in aluminum and their precipitation strengthening phases, Al-12Zn-2Mg-0.5Cu-0.3Sc high strength aluminum alloy is designed.
WANG Yanjing   +5 more
doaj   +1 more source

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