The Effect of B4C Powder on Properties of the WAAM 2319 Al Alloy

被引：10

作者：

Song, Xueping ^{[1
,2
,3
]}

Niu, Jinke ^{[1
,3
]}

Huang, Jiankang ^{[1
]}

Fan, Ding ^{[3
]}

Yu, Shurong ^{[4
]}

Ma, Yuanjun ^{[2
]}

Yu, Xiaoquan ^{[5
]}

机构：

[1] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China

[2] Lanzhou Petrochem Univ Vocat Technol, Mech Engn Coll, Lanzhou 730060, Peoples R China

[3] Lanzhou Univ Technol, Mat Sci & Engn Coll, Lanzhou 730050, Peoples R China

[4] Lanzhou Univ Technol, Mech & Elect Coll, Lanzhou 730050, Peoples R China

[5] Zhejiang Univ, Res Inst, Taizhou 318000, Peoples R China

来源：

MATERIALS | 2023年 / 16卷 / 01期

基金：

中国国家自然科学基金;

关键词：

2319 aluminum alloy; microstructure; B4C powder; WAAM; mechanical properties; MECHANICAL-PROPERTIES; MICROSTRUCTURE; BEHAVIOR;

D O I：

10.3390/ma16010436

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

With ER2319 and B4C powder as feedstocks and additives, respectively, a wire arc additive manufacturing (WAAM) system based on double-pulse melting electrode inert gas shielded welding (DP-MIG) was used to fabricate single-pass multilayer 2319 aluminum alloy. The results showed that, compared with additive manufacturing component without B4C, the addition of which can effectively reduce the grain size (from 43 mu m to 25 mu m) of the tissue in the deposited layer area and improve its mechanical properties (from 231 MPa to 286 MPa). Meanwhile, the mechanical properties are better in the transverse than in the longitudinal direction. Moreover, the strengthening mechanism of B4C on the mechanical properties of aluminum alloy additive manufacturing mainly includes dispersion strengthening from fine and uniform B4C granular reinforcing phases and fine grain strengthening from the grain refinement of B4C. These findings shed light on the B4C induced grain refinement mechanism and improvement of WAAM 2319 Al alloy.

引用

页数：14