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- 저자 : Jiang Daibo (검색결과 2 건)
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Xiangyang Xu,Jiang Daibo,Hateo Gou 국제구조공학회 2022 Steel and Composite Structures, An International J Vol.45 No.6
Geopolymer concrete ( ) has emerged as a feasible choice for construction materials as a result of the environmental issues associated with the production of cement. The findings of this study contribute to the development of machine learning methods for estimating the properties of eco-friendly concrete to help reduce 2 emissions in the construction industry. The compressive strength ( ) of is predicted using artificial intelligence approaches in the present study when ground granulated blast-furnace slag ( ) is substituted with natural zeolite ( ), silica fume ( ), and varying concentrations. For this purpose, two machine learning methods multi-layer perceptron ( ) and radial basis function ( ) were considered and hybridized with arithmetic optimization algorithm ( ), and grey wolf optimization algorithm ( ). According to the results, all methods performed very well in predicting the of . The proposed − might be identified as the outperformed framework, although other methodologies ( − , − , and − ) were also reliable in the of forecasting process.
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Enhanced Strength–Corrosion Synergy of 6061Al Casting Alloy Through Erbium Addition
Guilan Xie,Puli Cao,Daibo Zhu,Jingxin Li,Chaohua Jiang,Juan Li,Yang Liu,Jirong Liu,Yulong Zhu 대한금속·재료학회 2023 METALS AND MATERIALS International Vol.29 No.12
The purpose of this work is to investigate the effect of Er on mechanical properties and corrosion behavior of 6061 alloys. Thetensile strength and corrosion resistance of the 6061 alloys first enhanced and then declined synergistically with the increaseof Er content. Microstructure analysis revealed that the morphology, composition, and potential of secondary phases changedsignificantly as Er content changed. When the Er content is 0.6 wt%, the needle-like β-AlFeSi phases transformed into thegranular AlFeSiEr phases, which led to an increase in the tensile strength of the 6061 alloys. At the same time, compared withthe acicular β-AlFeSi phases, the granular AlFeSiEr phases own a lower potential difference with α-Al, which weakened thecorrosion of the micro-galvanic couples. However, as the Er content is higher than 0.6 wt%, the granular AlFeSiEr phaseschanged to block-shaped, which can adversely affect the tensile strength and corrosion resistance of the 6061 alloys. EISresults show that, compared with the acicular β-AlFeSi phases, the 6061 alloys with granular AlFeSiEr phases form moreuniform oxide films and exhibit better corrosion resistance. This study indicates that through appropriate Er addition, thesynergistic enhancement of tensile strength and corrosion resistance of the 6061 alloys can be obtained, which is of greatsignificance for the strengthening and long-term service of aluminum alloys.
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