نتایج جستجو برای: improvement of formability

تعداد نتایج: 21177662  

Journal: :Transactions of the VŠB - Technical University of Ostrava, Mechanical Series 2011

Single point incremental sheet forming (SPISF) has demonstrated significant potential to form complex sheet metal parts without using component-specific tools and is suitable for fabricating low-volume functional sheet metal parts economically. In the SPIF process, a ball nose tool moves along a predefined tool path to form the sheet. This work aims to optimize the formability and forming force...

2017
Weigang Zhao Song-Jeng Huang Cheng-Wei Kang

Magnesium metal matrix composites (Mg MMCs) possess relatively more favorable mechanical properties than Mg alloys because they add reinforcements, such as small particles, short fibers, or continuous fibers, into the matrix. This study investigated the influence of adding different sizes and percentages of silicon carbide particles (SiCp) for manufacturing AZ61/SiCp Mg alloy composite extrusio...

2014
Matthias K. Klein Andreas Zumbusch Patrick Pfleiderer

Polymeric nano andmicroparticles are finding widespread applications in materials and biological science. In all preparation methods pursued to date, the chemical stability of the particles is determined by the polymer system chosen. Usually, after particle synthesis, postprocessing with the aim of changing their stability is not possible. Therefore, one only has two choices: the synthesis of c...

Journal: :Production Engineering 2011
Alexander Göttmann Jö Diettrich Georg Bergweiler Markus Bambach Gerhard Hirt Peter Loosen Reinhart Poprawe

Asymmetric Incremental Sheet Forming (AISF) is a relatively new manufacturing process. In AISF, a CNC driven forming tool imposes a localized plastic deformation as it moves along the contour of the desired part. Thus, the final shape is obtained by a sequence of localized plastic deformations. AISF is suitable for small series production of sheet metal parts as needed in aeronautical and medic...

Journal: :Key Engineering Materials 2022

Reliable composite forming experiments are required to characterize formability, aid material development, and validate process simulations models. Due practical reasons, however, typically a limited amount of configurations is studied. The objective this study is, therefore, develop methodology for obtaining controlled results in wide range configurations. Press using dome geometry were used e...

2016
Yongnan Chen Wenqing Yang Haifei Zhan Fengying Zhang Yazhou Huo Yongqing Zhao Xuding Song Yuantong Gu

Semi-solid processing (SSP) is a popular near-net-shape forming technology for metals, while its application is still limited in titanium alloy mainly due to its low formability. Recent works showed that SSP could effectively enhance the formability and mechanical properties of titanium alloys. The processing parameters such as temperature and forging rate/ratio, are directly correlated with th...

2014
Young Kyun Kim Won Tae Kim Hyang Kim

The formation of the icosahedral phase (I-phase) as a secondary solidification phase in Mg–Zn–Y and Mg–Zn–Al base systems provides useful advantages in designing high performance wrought magnesium alloys. The strengthening in two-phase composites (I-phase + α-Mg) can be explained by dispersion hardening due to the presence of I-phase particles and by the strong bonding property at the I-phase/m...

Journal: :The Journal of chemical physics 2013
Kai Zhang Minglei Wang Stefanos Papanikolaou Yanhui Liu Jan Schroers Mark D Shattuck Corey S O'Hern

Bulk metallic glasses (BMGs) are produced by rapidly thermally quenching supercooled liquid metal alloys below the glass transition temperature at rates much faster than the critical cooling rate R(c) below which crystallization occurs. The glass-forming ability of BMGs increases with decreasing R(c), and thus good glass-formers possess small values of R(c). We perform molecular dynamics simula...

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