Zobrazeno 1 - 10
of 266
pro vyhledávání: '"Oscar A. Ruano"'
Publikováno v:
Materials, Vol 16, Iss 18, p 6251 (2023)
The mechanical properties of 2024 aluminum alloy were studied after two different tempers. The T351 temper (solution heat treatment, stress relief, and natural aging) leads to high hardness and toughness. A thermal treatment consisting of heat-treati
Externí odkaz:
https://doaj.org/article/7a6d6b16d42842c0bde3c285dd9ef1c5
Publikováno v:
Metals, Vol 12, Iss 11, p 1880 (2022)
A commercial 2024 aluminum alloy was heat treated at 280 °C for 48 h and then slow cooled in a furnace to obtain minimum hardness. This material was then friction stir processed (FSP) using three sets of processing conditions. To study the effect of
Externí odkaz:
https://doaj.org/article/a539097ffe2145d7bd39b47a00dbe224
Autor:
Oscar Antonio Ruano, Ignacio Rieiro
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
Processing maps have been built for > 30 years to predict the stable conditions for metal forming at high temperatures and strain rates. These maps, which also include efficiency conditions, are based on the stability criterion of Ziegler–Prasad (Z
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
In this work, tensile tests were conducted on two powder metallurgy materials based on the AZ31 magnesium alloy. The first material, named AZ31-PM, was processed using atomized powder, followed by isostatic cold compaction at 340 MPa, plus hot extrus
Publikováno v:
Journal of Magnesium and Alloys 10.
The coarse-grained WE54 magnesium alloy was heat treated in order to have minimum hardness minimizing the effects of precipitates and solid solution. Friction stir processing (FSP) was applied in severe conditions to obtain ¿ne, equiaxed and highly
A commercial WE54 magnesium alloy was severely processed by FSP, lowering heat input, aiming to improve the mechanical properties, both strength and ductility. Additionally, a refrigerated backing anvil was used to warrant rapid cooling and maximize
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b920d9ec271b05af9c32e3ca6bab7ac
http://hdl.handle.net/10261/295849
http://hdl.handle.net/10261/295849
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
A modified iron-based superalloy is studied regarding its hot formability. The microstructure contained particles of titanium carbides, carbonitrides and nitrates. Torsion tests at high strain rate at temperatures ranging from 800 to 1200°C were con
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
Solute-drag creep is a diffusion-controlled process that may govern deformation in coarse-grained materials with solute atoms in solution. Elongation-to-failure tensile tests were conducted in a WE54 alloy containing solutes of Y and Nd in the range
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94ce4070a5fe58dc92e27bb81263f157
http://hdl.handle.net/10261/216354
http://hdl.handle.net/10261/216354
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
The hot working behavior of a 38Ni-21Cr based superalloy was studied. Torsion tests at strain rates between 2 and 20 s-1and temperatures between 1123 and 1473 K were conducted. A fine microstructure of about 6-10 lm grain size and small TiC particles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::332ade150b5f8e2243aec0cdb73e352f
http://hdl.handle.net/10261/230855
http://hdl.handle.net/10261/230855
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
Materials & Design, Vol 137, Iss, Pp 128-139 (2018)
instname
Materials & Design, Vol 137, Iss, Pp 128-139 (2018)
An overaged Al 7075 alloy was severe friction stir processed using two different backing anvils using different heat extraction rates. A range of processing parameters ω (rotation speed) and V (traverse speed) involving low heat index (HI) for obtai