نتایج جستجو برای: precipitation hardening

تعداد نتایج: 69207  

2018
Pedro Henrique Lamarão Souza Carlos Augusto Silva de Oliveira José Maria do Vale Quaresma David Ferreira Lima

The aim of this study was to investigate the effect of solute content (hipoperitectic Al–0.22 wt.%Zr and hiperperitectic Al–0.32 wt.%Zr) on the precipitation hardening and microstructural evolution of dilute Al–Zr alloys isothermally aged. The materials were conventionally cast in a muffle furnace, solidified in a water-cooled Cu mold and subsequently heat-treated at the temperature of 650 K (3...

Journal: :Advanced Materials 2021

Domain wall motion in ferroics, similar to dislocation metals, can be tuned by well-concepted microstructural elements. In demanding high-power applications of piezoelectric materials, the domain is considered as a lossy hysteretic mechanism that should restricted. Current for so-called hard piezoelectrics are abundant and hinge on use an acceptor-doping scheme. However, this features severe li...

2015
Keitaro Horikawa Yuki Kitani Tomo Ogura Akio Hirose Makoto Takahashi Hidetoshi Kobayashi

The age hardening of an Al-Mg-Si alloy was enhanced by the effect of high-speed (105 s11) compression prior to aging. This enhancement of the age hardening is brought about by the formation of vacancy clusters during high-speed compression. High resolution transmission electron microscopy reveals that these vacancy clusters form stacking fault tetrahedra. Following peak aging, vacancy clusters ...

Journal: :Journal of the Japan Institute of Metals and Materials 1971

F. Hosseini Nasab, M. Movaghar Garabagh S. Hossein Nedjad

X-ray diffraction peak profile analysis was used to identify changes in the lattice distortions during isothermal aging of Fe-10Ni-7Mn (wt. %) maraging steel. Integral peak breadths were analyzed using classical Williamson-Hall equation taking the elastic anisotropy into account. It was found that substantial lattice distortions rise during precipitation hardening which depend strongly on the s...

Journal: :Journal of dental research 1965
R G CRAIG H J SLESNICK F A PEYTON

Several alloys described as stainless steel which resist tarnish and corrosion in the mouth are being used for a variety of dental appliances and instruments. Probably the greatest application of stainless steel is for orthodontic arch wires and bands, while a more limited use is for temporary space maintainers and crown forms. Root-canal files and reamers designed for endodontic operations als...

Journal: :The Journal of the Acoustical Society of America 1956

2015
P. R. Prabhu K. Jagannath Gowri Shankar

In present global scenario, aluminum alloys are coining the attention of many innovators as competing structural materials for automotive and space applications. Comparing to other challenging alloys, especially, 7xxx series aluminum alloys have been studied seriously because of benefits such as moderate strength; better deforming characteristics and affordable cost. It is expected that substit...

Journal: :Metallurgical and Materials Transactions A 2012

Journal: :Journal of the Japan Institute of Metals and Materials 1969

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