Aluminium Alloys and Composites最新文献

Introductory Chapter: Structural Aluminum Alloys and Composites 导论章:结构铝合金和复合材料

Aluminium Alloys and Composites Pub Date : 2020-03-04 DOI: 10.5772/intechopen.90569

Kavian Omar Cooke

引用次数: 7

Aluminum Alloys Behavior during Forming 铝合金成形过程中的行为

Aluminium Alloys and Composites Pub Date : 2019-11-27 DOI: 10.5772/intechopen.86077

P. J. Ramulu

引用次数: 3

Composites and Alloys Based on the Al-Ce System 基于Al-Ce体系的复合材料和合金

Aluminium Alloys and Composites Pub Date : 2019-11-23 DOI: 10.5772/intechopen.89994

D. Weiss

{"title":"Composites and Alloys Based on the Al-Ce System","authors":"D. Weiss","doi":"10.5772/intechopen.89994","DOIUrl":"https://doi.org/10.5772/intechopen.89994","url":null,"abstract":"Aluminum alloys containing small amounts of cerium have been investigated to improve the grain refining, casting characteristics, and mechanical properties of aluminum alloys. These additions were usually made at levels of 1% or less but did not produce appreciable improvements. Recent work has shown that additions between 4% and the approximate eutectic composition of 10% improve the high-temperature performance of aluminum alloys. Corrosion performance of aluminum alloys can also be improved through the addition of Ce. Traditional aluminum alloying elements such as magnesium and silicon can be used to control casting characteristics and thermal and physical properties. Cerium oxide is the predominate oxide in rare earth mining. Much of it is discarded after separation from the heavy rare earth oxides containing Nd and Dy. The beneficial use of Ce should reduce the cost of the more desirable rare earths. Results of using Ce as an addition to aluminum in mul-tiple manufacturing methods such as additive manufacturing, extrusion, and casting are explored. The results show significant strengthening and improved mechanical property retention at higher temperatures than in other aluminum alloys and, in some compositions, show complete recovery of mechanical properties at room temperature when exposed to elevated temperatures as high as 500°C for 1000 hours.","PeriodicalId":377033,"journal":{"name":"Aluminium Alloys and Composites","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128937488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Experimental Investigations on AA 6061 Alloy Welded Joints by Friction Stir Welding AA 6061合金搅拌摩擦焊接接头的试验研究

Aluminium Alloys and Composites Pub Date : 2019-10-24 DOI: 10.5772/intechopen.89797

P. Hema

{"title":"Experimental Investigations on AA 6061 Alloy Welded Joints by Friction Stir Welding","authors":"P. Hema","doi":"10.5772/intechopen.89797","DOIUrl":"https://doi.org/10.5772/intechopen.89797","url":null,"abstract":"Aluminum and aluminum composites play important role in aerospace, automo-bile, marine and structural applications. Literature shows that some of the con-ventional fusion welding processes in joining of aluminum metals result in defects like porosity, distortion owing to elevated thermal conductivity and solidification shrinkage. To overcome such issues, experimental investigations are conducted using Friction Stir Welding (FSW) process in joining of metal plates of aluminum 6061 alloy. Weld joint samples are cut to required sizes and secured them in position by mechanical clamps. The setup is loaded onto Vertical Machining Centre. Nonconsumable tool tips of four different shapes of tungsten carbide and H13 materials are prepared and attached to the spindle. The machine is started and allowed spindle to rotate the tool to plunge onto metal plates along joint line. An axial force is continuously applied until sufficient heat is generated at mating surfaces for joining. Experiments are repeated at different levels by varying welding parameters. Joints are tested for their mechanical properties. The microstructural analysis is studied by SEM. Artificial Neural Network (ANN) simulation model is developed for validation. ANOVA is applied for validation of output results of mechanical properties and optimal process parameters are determined. Research shows that joints are influenced by profile of tool pin and, therefore, the rotational speed of the tool.","PeriodicalId":377033,"journal":{"name":"Aluminium Alloys and Composites","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134645861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Wear Behaviour of Aluminium Alloy 8011 with 4% Fly Ash Composites by Using Sensitivity Analysis 4%粉煤灰复合材料对8011铝合金磨损性能的敏感性分析

Aluminium Alloys and Composites Pub Date : 2019-10-09 DOI: 10.5772/intechopen.89554

S. Magibalan

{"title":"Wear Behaviour of Aluminium Alloy 8011 with 4% Fly Ash Composites by Using Sensitivity Analysis","authors":"S. Magibalan","doi":"10.5772/intechopen.89554","DOIUrl":"https://doi.org/10.5772/intechopen.89554","url":null,"abstract":"The current research work is focused on fabrication of Aluminium Alloy 8011 with 4% fly ash composite (AA8011-4% FA) by using the stir casting method. Wear behaviour and description of the composite are evaluated in different process parameters by using a pin-on-disc at room temperature. Fly ash (FA) in the range of (4 wt. %, average micron size 10 – 30 μ m) is included into the matrix, and its sensitivity analysis is investigated. Three level of Central Composite Design model is developed by using Response Surface Methodology equation with different process parameters via load, time and sliding velocity are separate in the range of (5 – 15 N), (5 – 15 min) and (1.5 – 4.5 m/s) respectively. The surface plot shows that wear rate increases with increasing load, time and sliding velocity. A sensitivity analysis is also carried out and compared with the relative impact of input parameters on wear behaviour in order to verify the measurement errors on the values of the uncertainty in estimated parameters of three inputs such as normal load, time and sliding velocity on wear rate (WR) and coefficient of friction (COF). The result shows that normal load is more sensitive than the other parameters. The variation of load causes more changes in wear rate.","PeriodicalId":377033,"journal":{"name":"Aluminium Alloys and Composites","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115753615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Aluminium and Its Interlinking Properties 铝及其交联性能

Aluminium Alloys and Composites Pub Date : 2019-08-09 DOI: 10.5772/INTECHOPEN.86553

K. Velmanirajan, K. Anuradha

引用次数: 0

Effect of Grain Size on Superplastic Deformation of Metallic Materials 晶粒尺寸对金属材料超塑性变形的影响

Aluminium Alloys and Composites Pub Date : 2019-06-28 DOI: 10.5772/INTECHOPEN.86017

A. Raja, R. Jayaganthan, A. Tiwari, Ch. Srinivasa Rakesh

{"title":"Effect of Grain Size on Superplastic Deformation of Metallic Materials","authors":"A. Raja, R. Jayaganthan, A. Tiwari, Ch. Srinivasa Rakesh","doi":"10.5772/INTECHOPEN.86017","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.86017","url":null,"abstract":"The superplastic deformation exhibited by metals with different grain sizes and their corresponding deformation mechanism influences the industrial metal-forming processes. The coarse-grained materials, which contain grain size greater than 20 μ m, exhibited superplastic deformation at high homologous temperature and low strain rate of the order of 10 − 4 s − 1 . Fine grain materials (1–20 μ m) are generally considered as favorable for superplastic deformation. They possess high-strain-rate sensitivity “m” value, approximately, equal to 0.5 at the temperature of 0.5 times the melting point and at a strain rate of 10 − 3 to 10 − 4 s − 1 . Ultrafine grains (100 nm to less than 1 μ m) exhibit superplasticity at high strain rate as well as at low temperature when compared to fine grain materials. It is attributed to the fact that both temperature and strain rates are inversely proportional to the grain size in Arrhenius-type superplastic constitute equation. The superplastic phenomenon with nano-sized grains (10 nm to less than 100 nm) is quite different from their higher-scale counterparts. It exhibits high ductility with high strength. Materials with mixed grain size distribution (bimodal or layered) are found to exhibit superior superplasticity when compared to the homogeneous grain-sized material. The deformation mechanisms governing these superplastic deformations with different scale grain size microstructures are discussed in this chapter.","PeriodicalId":377033,"journal":{"name":"Aluminium Alloys and Composites","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116170369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Novel Applications of Aluminium Metal Matrix Composites 铝金属基复合材料的新应用

Aluminium Alloys and Composites Pub Date : 2019-05-10 DOI: 10.5772/INTECHOPEN.86225

Francis Nturanabo, L. Masu, J. Kirabira

{"title":"Novel Applications of Aluminium Metal Matrix Composites","authors":"Francis Nturanabo, L. Masu, J. Kirabira","doi":"10.5772/INTECHOPEN.86225","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.86225","url":null,"abstract":"Advanced materials have offered the materials designer a wide range of options in the specification and selection of materials for various applications. Material properties are continually being improved to meet safety and operational standards in line with prevailing technological developments. Modern technological requirements, together with the consumers’ demands for systems and machines that are more energy efficient, stronger, light-weight, cost-effective, etc., dictate that the search for new and advanced materials will remain a subject of interest all the time. The dif-ficulty in designing materials for such stringent specifications cannot be overstated, owing to the conflicting nature of these specifications. Aluminium metal matrix composites (AlMMCs) are a class of materials that have proven successful in meeting most of the rigorous specifications in applications where light-weight, high stiffness and moderate strength are the requisite properties. With a variety of reinforcement materials and flexibility in their primary processing, AlMMCs offer great potential for the development of composites with the desired properties for certain applications. In this review, the development, utilisation and future potential of AlMMCs in various industrial and commercial applications is discussed, together with the existing challenges hindering their full market penetration.","PeriodicalId":377033,"journal":{"name":"Aluminium Alloys and Composites","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127510386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 81

Aluminum Mineral Processing and Metallurgy: Iron-Rich Bauxite and Bayer Red Muds 铝矿加工和冶金:富铁铝土矿和拜耳红泥

Aluminium Alloys and Composites Pub Date : 2018-11-05 DOI: 10.5772/INTECHOPEN.78789

Yingyi Zhang, Y. Qi, Jiaxin Li

{"title":"Aluminum Mineral Processing and Metallurgy: Iron-Rich Bauxite and Bayer Red Muds","authors":"Yingyi Zhang, Y. Qi, Jiaxin Li","doi":"10.5772/INTECHOPEN.78789","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.78789","url":null,"abstract":"Bauxite is the main source for alumina production. With the rapid development of iron and steel industry and aluminum industry, high-quality iron ore and bauxite resources become increasingly tense. However, a lot of iron-rich bauxite and Bayer red mud resources have not been timely and effectively recycled, resulting in serious problems of environmental pollution and wastage of resources. The comprehensive utilization of iron- rich bauxite and red mud is still a worldwide problem. The industrial stockpiling is not a fundamental way to solve the problems of iron-rich bauxite and red mud. As to the recovery of valuable metals from iron-rich bauxite and red mud, there are a lot of technical and cost problems, which are serious impediments to industrial development. Applying red mud as construction materials like cement, soil ameliorant applications face the problem of Na, Cr, As leaching into the environment. However, the high-temperature reduction, smelting and alkaline leaching process is a feasible method to recover iron and alumina from iron-rich bauxite and red mud. This chapter intends to provide the reader an overview on comprehensive utilization technology of the low-grade iron-rich bauxite and Bayer red mud sources.","PeriodicalId":377033,"journal":{"name":"Aluminium Alloys and Composites","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122856688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2