Quick Search:       Advanced Search
李权,罗志伟,冯晨,张睿泽,宋全,虞波,王福德.2219铝合金电弧增材制造组织及力学性能的非均匀性[J].稀有金属材料与工程(英文),2020,49(11):3969~3976.[LI Quan,LUO Zhiwei,FENG Chen,ZHANG Ruize,Song Quan,YU Bo and WANG Fude.Study on the inhomogeneous microstructures and mechanical properties of additively manufactured 2219 aluminum alloy[J].Rare Metal Materials and Engineering,2020,49(11):3969~3976.]
Study on the inhomogeneous microstructures and mechanical properties of additively manufactured 2219 aluminum alloy
Download Pdf  View/Add Comment  Download reader
Received:December 08, 2019  Revised:February 22, 2020
DOI:
Key words: 2219 aluminum  Wire and Arc Additive Manufacturing  anisotrpic mechanical properties  brittle phases
Foundation item:科技部重点研发计划(项目号2018YFB1106305),载人航天项目
Author NameAffiliation
LI Quan,LUO Zhiwei,FENG Chen,ZHANG Ruize,Song Quan,YU Bo and WANG Fude  
Hits: 52
Download times: 3
Abstract:
      Wire and Arc Additive manufacturing (WAAM) of 2219 aluminum alloy parts is a prospective manufacturing technology in the aerospace industry. In this study, the single wall specimens of 2219 aluminum alloy were built by WAAM technology using CMT welding process. The microstructure characteristics in as deposited state, solid solution state and artificial aging state were systematically investigated. It was found that the weakness strip with more micro porosities, θ(Al2Cu) phases and iron rich phases in the interlayer region resulted in the anisotrpic mechanical properties of the WAAM specimens. When the specimens were tensioned in the vertical direction, cracks formed easily in the interlayer region, and deteriorated the tensile strength and plasticity. In order to increase the mechanical properties of the WAAM 2219 aluminum alloy in the vertical direction, the composition of Fe and Si in the wire should be as low as possible.