Additive friction stir deposition of AZ31B magnesium alloy  

作　　者：Sameehan S.Joshi Shreyash M.Patil Sangram Mazumder Shashank Sharma Daniel A.Riley Shelden Dowden Rajarshi Banerjee Narendra B.Dahotre 

机构地区：[1]Department of Materials Science and Engineering,University of North Texas,3940 N Elm St,Denton,TX 76207,USA [2]Center for Agile and Adaptive Additive Manufacturing,University of North Texas,3940 N Elm St,Denton,TX 76207,USA

出　　处：《Journal of Magnesium and Alloys》2022年第9期2404-2420,共17页镁合金学报（英文）

基　　金：the infrastructure and support of Center for Agile and Adaptive Additive Manufacturing(CAAAM)funded through State of Texas Appropriation:190405-105-805008-220。

摘　　要：The current work explored additive friction stir deposition of AZ31B magnesium alloy with the aid of MELD?technology.AZ31B magnesium bar stock was fed through a hollow friction stir tool rotating at constant velocity of 400 rpm and translating at linear velocity varied from 4.2 to 6.3 mm/s.A single wall consisting of five layers with each layer of 140×40×1 mm^(3)dimensions was deposited under each processing condition.Microstructure,phase,and crystallographic texture evolutions as a function of additive friction stir deposition parameters were studied with the aid of scanning electron microscopy including electron back scatter diffraction and X-ray diffraction.Both feed material and additively produced samples consisted of theα-Mg phase.The additively produced samples exhibited a refined grain structure compared to the feed material.The feed material appeared to have a weak basal texture,while the additively produced samples experienced a strengthening of this basal texture.The additively produced samples showed a marginally higher hardness compared to the feed material.The current work provided a pathway for solid state additive manufacturing of Mg suitable for structural applications such as automotive components and consumable biomedical implants.

关 键 词：Additive friction stir deposition Magnesium alloys Additive manufacturing Thermomechanical processing Materials processing Solid state additive manufacturing 

分 类 号：TG146.22[一般工业技术—材料科学与工程]