نتایج جستجو برای: ultrafine grained
تعداد نتایج: 27085 فیلتر نتایج به سال:
Titanium is widely used in biomedical materials, particularly in dental implants, because of its excellent biocompatibility and mechanical characteristics. However, titanium implant failures still remain in some cases, varying with implantation sites and patients. Improving its overall performance is a major focus of dental implant research. Equal-channel angular pressing (ECAP) can result in u...
Bulk ultrafine grained (UFG)/nanocrystal metals possess exceptional strength but normally poor ductility and thermal stability, which hinder their practical applications especially in high-temperature environments. Through microalloying strategy that enables the control of grains and precipitations in nanostructured regime, here we design and successfully produce a highly microstructure-stable ...
Increasing the hardness and wear resistance of powder alloys coatings through use ultrafine-grained powders metastable phases is a promising way in metallurgy. This paper presents results studies process obtaining ultrafine by electric discharge erosion cemented carbide waste WC-5TiC-10Co on special installation. An empirical model that describes dependence productivity energy properties liquid...
Article history: Received 25 October 2015 Received in revised form 2 December 2015 Accepted 3 December 2015 Available online 17 December 2015 We investigated the strain rate sensitivity (SRS) of freestanding ultrafine-grained aluminum films with similar thickness (~240 nm) and mean grain size (~275 nm) but highly dissimilar texture. For (110) textured bicrystalline films, flow stress increased ...
In this study, ultrafine grained 2024 Al alloy based B4C particles reinforced composite was produced by mechanical milling and hot extrusion. Mechanical milling was used to synthesize the nanostructured Al2024 in attrition mill under argon atmosphere up to 50h. A similar process was used to produce Al2024-5%wt. B4C composite powder. To produce trimodal composites, milled powders were combined w...
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