Results 231 to 240 of about 18,690 (245)
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Advances in ceramic hot forming and pressing: Theory and practice
Ceramics International, 1977Abstract Advances in the understanding of the hot forming of ceramic materials and the mechanisms of sintering during the intermediate and final stages of densification during hot pressing are reviewed. The available diffusion and plastic flow models are critically examined and approaches to the development of quantitative multimechanism models for ...
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Numerical Modeling of Hot Press Forming Process of Boron Steel Tube
AIP Conference Proceedings, 2010A hot press forming process consists of forming at the elevated temperature and rapid quenching, which induces phase transformation and results in the press hardening of steel parts. In this study, the hot press forming process of boron steel tube was analyzed by applying different heat transfer coefficients which had been experimentally measured and ...
Oh Suk Seo +6 more
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Mechanism study on microgroove forming by ultrasonic vibration assisted hot pressing
Precision Engineering, 2016Abstract Microgrooves with a pitch at wave length level are increasingly needed in the optical system. Conventionally, the accuracy is low in microgroove forming due to the incomplete filling in the cavity of microgroove mold, as well as the surface flaws appearing with the adhesion of the resin material to the mold surface.
Jiaqing Xie +4 more
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Processing map for hot working of spray formed and hot isostatically pressed Al–Li alloy (UL40)
Journal of Materials Processing Technology, 2009Abstract The hot deformation behavior of spray formed + HIPed Al–Li (UL40) alloy was studied using processing map technique. The map has been interpreted in terms of the microstructural processes occurring in situ with deformation, based on the values of a dimensionless parameter η which is an efficiency index of energy dissipation through ...
REDDY, GJ +3 more
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Key Engineering Materials, 2013
High performance composites are used in commercial applications in a steadily growing degree. This increase of advanced materials is accomponied with the development of fully automated fabrication processes. It aims to drive down the time and costs of the production while ensuring a high quality of the product.
Ulrich Sachs +4 more
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High performance composites are used in commercial applications in a steadily growing degree. This increase of advanced materials is accomponied with the development of fully automated fabrication processes. It aims to drive down the time and costs of the production while ensuring a high quality of the product.
Ulrich Sachs +4 more
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Simulation of Thermal Distortion in Hot Press Forming with Dissimilar Material TWB
Advanced Materials Research, 2014In order to predict the shape change in hot press forming of a TWB made with HPF1470 boron steel and HSLA340 micro-alloyed steel sheets, a coupled thermo-mechanical-metallurgical finite element model was developed to simulate the process. The simulation consisted of air cooling, forming, die-quenching and, finally, by a treatment designed to relax ...
H. H. Bok +4 more
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Study of TRIP-Aided Bainitic Ferritic Steels Produced by Hot Press Forming
Metallurgical and Materials Transactions A, 2014A study is reported to produce high strength ductile steels by controlled cooling following hot press forming, instead of quenching, as is practiced in the traditional press hardened steels. Heat treatments of several specially designed low carbon steels were carried out by interrupting the fast cooling from the austenization temperature at ...
Shangping Chen +2 more
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Synthesis of binary glass-forming oxide glasses by hot-pressing of gels
Journal of Non-Crystalline Solids, 1980Abstract Mixed gels of SiO 2 TiO 2 , SiO 2 P 2 O 5 and SiO 2 B 2 O 3 systems were prepared by sol-gel and/or hydrolysis and polycondensation of organometallic compounds. The conversion of gel into glass was achieved by hot-pressing of the previously dehydrated gel.
Rafi Jabra +2 more
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Forming and Simulation of Titanium Alloy Ti-6Al-4V by Hot Isostatic Pressing
Advanced Materials Research, 2013Numerical simulation of titanium alloy powder during hot isostatic pressing (HIP) with Shima model is studied in this paper. Material parameters in this model were determined based on uniaxial compression test with different relative density specimens. A titanium alloy ring sample was designed and formed by hot isostatic pressing.
Guo Liang Bu +4 more
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Hot pressing, press forming loom as answers to titanium fabrication
JOM, 1954H. W. Dodds, G. F. Davies
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