Tag Archives: Review

Figure 3. Radio filter produced by means of the RSF/RheoMetalTM process. A unique feature of this product is the weight reduction of 1.6 kg facilitated by wall thicknesses as low as 0.4 mm at 40 mm height (aspect ratio 100). High conductivity low Si alloys were used, and thermal transport properties further increased by up to 20% depending on the alloy composition by means of heat treatments, as depicted in the top right diagram by means of arrows denoting the course of the latter (images provided by Comptech AB, Skillingaryd, Sweden).

Advances in Metal Casting Technology: A Review of State of the Art, Challenges and Trends—Part II: Technologies New and Revived

Open Access by Dirk Lehmhus Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Wiener Straße 12, 28359 Bremen, GermanyMetals 2024, 14(3), 334; https://doi.org/10.3390/met14030334Submission received: 25 February 2024 / Accepted: 8 March 2024 / Published: 14 March 2024(This article belongs to the Special Issue Advances in Metal Casting Technology) 1. Introduction The present text is the second part of an editorial written for a

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Progress in the preparation, forming and machining of metallic glasses

Progress in the preparation, forming and machining of metallic glasses

Xiaoke Li, Gaohui Li, Jun Ma, Yang Cao, Yapeng Xu, Wuyi MingShow moreAdd to MendeleyShareCite https://doi.org/10.1016/j.jmapro.2024.03.022Get rights and content Highlights Abstract Metallic glasses (MGs), also known as amorphous alloys, has a unique atomic structure with long-range disorder and short-range order. MGs has excellent mechanical properties and is favored by many industries, such as, aerospace, medical devices, electronics and electricity, sports and leisure, etc. However, large-size MGs

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Advances in Metal Casting Technology: A Review of State of the Art, Challenges and Trends—Part II: Technologies New and Revived

Advances in Metal Casting Technology: A Review of State of the Art, Challenges and Trends—Part II: Technologies New and Revived

by Dirk Lehmhus Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Wiener Straße 12, 28359 Bremen, GermanyMetals 2024, 14(3), 334; https://doi.org/10.3390/met14030334Submission received: 25 February 2024 / Accepted: 8 March 2024 / Published: 14 March 2024(This article belongs to the Special Issue Advances in Metal Casting Technology) 1. Introduction It is a platitude that science and technology do not necessarily evolve along straight paths.

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Al-enabled properties distribution prediction for high-pressure die casting Al-Si alloy

Al-enabled properties distribution prediction for high-pressure die casting Al-Si alloy

Yu-Tong Yang, Zhong-Yuan Qiu, Zhen Zheng, Liang-Xi Pu, Ding-Ding Chen, Jiang Zheng, Rui-Jie Zhang, Bo Zhang & Shi-Yao Huang Abstract High-pressure die casting (HPDC) is one of the most popular mass production processes in the automotive industry owing to its capability for part consolidation. However, the nonuniform distribution of mechanical properties in large-sized HPDC products adds complexity to part property evaluation. Therefore, a methodology

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Figure 1. Illustration of LED lighting application and thermal network model.

Savings in Cooling Energy with a Thermal Management System for LED Lighting in Office Buildings

by Byung-Lip Ahn 1,2,Ji-Woo Park 1,Seunghwan Yoo 1,Jonghun Kim 1,Seung-Bok Leigh 2 andCheol-Yong Jang 1,* Abstract Light-emitting diode (LED) lighting should be considered for lighting efficiency enhancement, however, waste heat from light-emitting diode (LED) lighting increases the internal cooling load during the summer season. In order to solve this problem we propose a thermal management system for light-emitting diode (LED) lighting with a

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Fig. 4. Pictorial views of simple, circular pin-fin and copper foam-based heat sinks.

Experimental investigation for thermal performance enhancement of various heat sinks using Al2O3 NePCM for cooling of electronic devices

Imran Zahid ab, M. Farhan a, M. Farooq a, M. Asim a, M. Imran c Abstract Electronic devices are being used extensively for different applications, where the thermal management of these devices is still a critical challenge due to rapid miniaturization, high heat flux and constantly rising temperature. Phase change materials (PCMs) based thermal management is adopted, but the low thermal conductivity limits their use in temperature-controlled electronic devices. Nano-enhanced phase change materials

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Effects of Cr-addition on ageing response of an Al–Si–Mg die cast alloy

Effects of Cr-addition on ageing response of an Al–Si–Mg die cast alloy

Yiwu Xu ab1, Yuxin Zhang c1, Jinping Li d, Pan Wang e, Jianfeng Wang e, Houwen Chen c, Houqing Sun f, Hongyi Zhan e Abstract Chromium (Cr) is rarely added to Al–Si die cast alloys as it has a strong tendency to induce the formation of coarse-sized sludge particles. In the present study, high pressure die-cast samples made of Al-7wt.%Si–Cr–Mg alloys with varied Fe contents (0.11 wt%, 0.26 wt% and 0.32 wt%) were tensile tested under as-cast and T5 heat-treated conditions, in comparison

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Effect of Mold Temperature and Pouring Temperature on the Crack Behavior of Composite Water-Soluble Salt Cores

Effect of Mold Temperature and Pouring Temperature on the Crack Behavior of Composite Water-Soluble Salt Cores

Jingkai Zhang1, Yang Li1, Lai Song1, Weihua Liu1 & Xue Zou1 Abstract This study analyzes the effects of different pouring temperatures and mold temperatures on the crack behavior of NaCl–Na2SO4 composite water-soluble salt cores (WSSC). Firstly, calculate the solid fraction during the solidification process of the salt core using the Newton baseline method. Then predict the sensitivity of the salt core

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7. Appearance of texturized surfaces: (a) stochastic and (b) regular arrangemen

Research on the Tribological Properties of a New Generation ofMulti-Layer Nanostructured PVD Coatings for Increasing theTechnological Lifetime of Moulds

Janette Brezinová1,* , Miroslav Džupon 2, Viktor Puchý2, Jakub Brezina 3, Pavlo Maruschak 4,Anna Guzanová3, Lýdia Sobotová5 and Miroslav Badida 5 Abstract This paper presents the results of research focused on increasing the lifespan of HPDCmoulds for casting aluminium alloys by applying duplex PVD coatings in combination with lasertexturing the base material before the coatings’

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Effects of Cr-addition on ageing response of an Al–Si–Mg die cast alloy

Effects of Cr-addition on ageing response of an Al–Si–Mg die cast alloy

Yiwu Xu ab1, Yuxin Zhang c1, Jinping Li d, Pan Wang e, Jianfeng Wang e, Houwen Chen c, Houqing Sun f, Hongyi Zhan e Abstract Chromium (Cr) is rarely added to Al–Si die cast alloys as it has a strong tendency to induce the formation of coarse-sized sludge particles. In the present study, high pressure die-cast samples made of Al-7wt.%Si–Cr–Mg alloys with varied Fe contents (0.11 wt%, 0.26 wt% and 0.32 wt%) were tensile tested under as-cast and T5 heat-treated conditions, in comparison

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