High-entropy alloys (HEAs) are emerging materials that are developed based on entropy, anddraw significant attention for the potential to design their chemical disorder to bring outdifferent structural and physical ch...High-entropy alloys (HEAs) are emerging materials that are developed based on entropy, anddraw significant attention for the potential to design their chemical disorder to bring outdifferent structural and physical characteristics. Over the past two decades, significant salientefforts have been conducted to explore many unique and useful properties of HEAs, such asovercoming the strength–ductility trade-off, outstanding thermal stability, and excellent lowtemperature plasticity. Here, we review the key research topic of HEAs in the following threeaspects: (a) performance advantages and composition design, (b) performance-driven HEAs and(c) fabrication process-driven HEAs. Towards their industrial applications, our article reviews alarge range of methods to synthesise, fabricate and process HEAs. We also discuss the currentchallenges and future opportunities, mainly focusing on performance breakthroughs in HEAs.展开更多
In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method： planetary wheel method, and analyze the principle of tooling structure and pro...In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method： planetary wheel method, and analyze the principle of tooling structure and process with computer graphics parameters design. The results that, as long as the appropriate parameters, using the above method not only can punch the square hole, can also be processed triangle, the five angle and hexagonal regular polygon holes. The square hole processing method can provide theoretical basis and engineering reliable reference for related engineering and technical personnel.展开更多
基金Y Z acknowledges supports from Guangdong Basic and Applied Basic Research Foundation(2019B1515120020)Creative Research Groups of China(No.51921001).
文摘High-entropy alloys (HEAs) are emerging materials that are developed based on entropy, anddraw significant attention for the potential to design their chemical disorder to bring outdifferent structural and physical characteristics. Over the past two decades, significant salientefforts have been conducted to explore many unique and useful properties of HEAs, such asovercoming the strength–ductility trade-off, outstanding thermal stability, and excellent lowtemperature plasticity. Here, we review the key research topic of HEAs in the following threeaspects: (a) performance advantages and composition design, (b) performance-driven HEAs and(c) fabrication process-driven HEAs. Towards their industrial applications, our article reviews alarge range of methods to synthesise, fabricate and process HEAs. We also discuss the currentchallenges and future opportunities, mainly focusing on performance breakthroughs in HEAs.
文摘In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method： planetary wheel method, and analyze the principle of tooling structure and process with computer graphics parameters design. The results that, as long as the appropriate parameters, using the above method not only can punch the square hole, can also be processed triangle, the five angle and hexagonal regular polygon holes. The square hole processing method can provide theoretical basis and engineering reliable reference for related engineering and technical personnel.
