Silica particulate dispersion during additive friction deposition in a metal matrix composite

被引：1

作者：

Lopez, Jessica J. ^{[1
]}

Williams, Malcolm B. ^{[2
]}

Rushing, Timothy W. ^{[3
]}

Jordon, J. Brian ^{[3
]}

Allison, Paul G. ^{[2
]}

Thompson, Gregory B. ^{[1
,4
]}

机构：

[1] Univ Alabama, Dept Met Engn, 3434 HM Comer Bldg, Tuscaloosa, AL 35487 USA

[2] Baylor Univ, Dept Mech Engn, 1311 S 5th St, Waco, TX 76706 USA

[3] US Army Engineer Res & Dev Ctr, 3909 Halls Ferry Rd, Vicksburg, MS 39180 USA

[4] Univ Alabama, Alabama Mat Inst, 1005 Bevill Bldg,201 7th Ave, Tuscaloosa, AL 35487 USA

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 33卷

关键词：

Additive friction stir deposition; Silica; Aluminum; Composite; Dispersion;

D O I：

10.1016/j.jmrt.2024.11.099

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work presents a study of a low-power, solid-state additive manufacturing process to simultaneously mix and build a metal matrix composite. Specifically, an Al 6061 powder was blended with 11 wt% silica (SiO2) after which the powders were solid-state consolidated through additive friction stir deposition (AFSD). The inclusion of the SiO2 resulted in an average hardness of 70 +/- 1 HV as compared to a control (no SiO2) of 52 +/- 1 Hv. However, for the SiO2 composite, the hardness varied in both the radial build and vertical build directions, with the highest hardness found in the centerline of the deposit. This inhomogeneity has been contributed to differences in how the SiO2 particulates evolve during the stirring and mixing processes of AFSD. Furthermore, this variation in particulate evolution was found to be a useful marker in understanding the microstructure evolution through AFSD.

引用

页码：8063 / 8070

页数：8

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