Development of High Performance of Al Alloys via Cryo‐Forming: A Review

Xiong, Hanqing; Su, Lihong; Kong, Charlie; Yu, Hailiang

doi:10.1002/adem.202001533

Cited by 32 publications

(5 citation statements)

References 133 publications

(210 reference statements)

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“…Compared with AR, the elongation of ACR was significantly improved. In addition, the HEAp/AMCs could accumulate a large amount of stored energy with a high density of dislocations in cryogenic environment, enabling grain refinement during ACR [22,23]. The phenomenon of dynamic recovery of AMCs because heat generation during AR will not occur [24,25].…”

Section: Microstructure Analysismentioning

confidence: 99%

Effect of asymmetric rolling on microstructure and mechanical properties of aluminum matrix composites

Luo

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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The lightweight of structural materials was an important research focus for reduced energy consumption and transport efficiency. Aluminium matrix composites (AMCs) had the advantages of high specific strength and good wear resistance, so they were widely used in automobile, aerospace and other fields. At present, the deformation mechanism of AMCs reinforced by high-entropy alloy particles (HEAp) in asymmetric rolling was not clear. In this work, AMCs ingot reinforced with 6 wt% HEAp was prepared by stir casting process. Then the mechanical properties of HEAp/AMCs under different rolling processes were studied by asymmetric rolling (AR) and asymmetric cryorolling (ACR) processes. High-entropy alloy (HEA) had excellent strength and toughness, which imparted good deformation ability when added to AMCs as reinforcement. The microstructure of AMCs reinforced by HEAp was refined by ACR. At the same time, the HEAp/AMCs obtained by ACR displayed a higher ultimate tensile strength (UTS) than that obtained by AR. The study of ACR shows that AMCs reinforced with HEAp have good toughness. ACR can reduce the thickness of HEAp/AMCs to a greater extent so as to produce AMCs strip with excellent mechanical properties.

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Section: Microstructure Analysismentioning

confidence: 99%

Effect of asymmetric rolling on microstructure and mechanical properties of aluminum matrix composites

Luo

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Aluminum alloys, as lightweight materials used in new energy vehicles, can effectively reduce the weight of the body, reduce energy consumption, and improve power [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Forming Characteristics of Tailor Rolled Blank of Aluminum Alloy during Three-Point Bending

Zhi,

Feng,

Wang

et al. 2024

Materials

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This paper presents an investigation on the forming characteristics of the tailor rolled blank of an aluminum alloy (Al-TRB) during three-point bending at room temperature through experiments and finite element simulations. The strain distribution, spring-back characteristics, and metal flow law of 6000 series Al-TRB during three-point bending are explored. The prepared Al-TRB has good bending properties, and no surface cracks appear in the bending region of the Al-TRB when bent to 180°. Surface roughening occurs on the outside of the bending region. Since the strain in the thick zone is greater than that in the thin zone, the surface roughening in the thick zone is more obvious than that in the thin zone. The spring-back angle in the thin zone is higher than that in the thick zone after three-point bending, and the overall spring-back angle of Al-TRB becomes larger with an increasing bending angle. When the transition zone of Al-TRB is centered and the length of the transition zone is certain, as the length of the equal-thickness zone increases, the spring-back angle of the thin zone is larger, while the spring-back angle of the thick zone is smaller. Under the premise of a certain total length of Al-TRB and the length of the transition zone, the larger the length proportion of the thin zone, the larger the overall spring-back angle of Al-TRB, and the larger the length proportion of the thick zone, the smaller the overall spring-back angle of Al-TRB. In addition, a slight metal flow phenomenon exists during three-point bending, which shows that the metal in the bending region will flow to the thick zone, and the metal at the edge will flow to the thin zone. At the same time, there are localized thickening and thinning phenomena in Al-TRB. This study is helpful because it provides theoretical guidance for designing molds for the actual production of Al-TRB parts for automotives.

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“…Weight reduction in the aerospace, automobile, and marine industries has become a primary trend to relieve this pressure. There is now a palpable desire to expand the application of lightweight materials such as aluminum (Al) alloys to reduce energy bills and maintenance costs [ 1 ]. Al alloys have attracted much attention for use in transportation, packaging, and architecture due to their good properties, such as low density, high specific strength, and excellent machinability [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Electrodeposited Ni-B-Graphene Oxide Composite Coatings

et al. 2022

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With the rapid development of modern industries, the surface quality and performance of metals need to be improved. Composite electrodeposition (co-deposition) has evolved as an important technique for improving the surface performance of metal materials. Herein, a new type of graphene oxide (GO)-reinforced nickel–boron (Ni-B) composite coating was successfully prepared on a 7075 aluminum (Al) alloy by co-deposition. Characterization revealed a significant improvement in the mechanical and anti-corrosion properties of the composite with the incorporation of GOs. The composite showed a rougher, compact, cauliflower-like morphology with finer grains, a higher hardness (1532 HV), a lower rate of wear (5.20 × 10−5 mm3∙N−1∙m−1), and a lower corrosion rate (33.66 × 10−3 mm∙y−1) compared with the Ni-B alloy deposit (878 HV, 9.64 × 10−5 mm3∙N−1∙m−1, and 116.64 × 10−3 mm∙y−1, respectively). The mechanism by which GOs strengthen the Ni-B matrix is discussed.

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Development of High Performance of Al Alloys via Cryo‐Forming: A Review

Cited by 32 publications

References 133 publications

Effect of asymmetric rolling on microstructure and mechanical properties of aluminum matrix composites

Effect of asymmetric rolling on microstructure and mechanical properties of aluminum matrix composites

Forming Characteristics of Tailor Rolled Blank of Aluminum Alloy during Three-Point Bending

Preparation and Properties of Electrodeposited Ni-B-Graphene Oxide Composite Coatings

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