Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Review On Progress of 7xxx Series Aluminum Alloy Materials

Version 1 : Received: 13 November 2021 / Approved: 15 November 2021 / Online: 15 November 2021 (19:14:37 CET)

How to cite: Dai, Y.; Yan, L.; Hao, J. Review On Progress of 7xxx Series Aluminum Alloy Materials. Preprints 2021, 2021110271 (doi: 10.20944/preprints202111.0271.v1). Dai, Y.; Yan, L.; Hao, J. Review On Progress of 7xxx Series Aluminum Alloy Materials. Preprints 2021, 2021110271 (doi: 10.20944/preprints202111.0271.v1).

Abstract

Since the first generation of 7xxx superhard aluminum alloy was investigated in 1930, hitherto the fifth generation aluminum alloy materials with high comprehensive properties such as high static strength, high strength, heat resistance, high toughness, damage resistance, low density and low quenching sensitivity have been improved and developed. This paper reviews the progress of 7xxx aluminum alloy materials in composition, microstructure, properties, preparation methods, heat treatment strengthening and applications from 2014 to 2021. The effect of adding trace elements on microstructure and properties of 7xxx series alloy and the problems existing in aging precipitation characteristics and reinforcement mechanism are discussed. The future development direction of 7xxx superhard aluminum alloy is prospected by optimizing heat treatment technological, adding appropriate trace elements to alloy and controlling alloy microstructure.

Keywords

7xxx superhard aluminum; Heat treatment technological; Alloy microstructure; Future direction

Subject

MATERIALS SCIENCE, General Materials Science

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