Microstructure and Defect Analysis of 17-4PH Stainless Steel Fabricated by the Bound Metal Deposition Additive Manufacturing Technology

被引：10

作者：

Di Pompeo, Valerio ^{[1
]}

Santecchia, Eleonora ^{[1
]}

Santoni, Alberto ^{[1
]}

Sleem, Kamal ^{[1
]}

Cabibbo, Marcello ^{[1
]}

Spigarelli, Stefano ^{[1
]}

机构：

[1] Polytech Univ Marche, Dept Ind Engn & Math Sci DIISM, Via Brecce Bianche 12, I-60131 Ancona, Italy

来源：

CRYSTALS | 2023年 / 13卷 / 09期

关键词：

solid-state additive manufacturing; material extrusion; metals and alloys; defects analysis; microstructural characterization; MECHANICAL-PROPERTIES; PARTICLE-SIZE; POWDERS; GAS;

D O I：

10.3390/cryst13091312

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Metal additive manufacturing (AM) technologies can be classified according to the physical process involving the raw material as fusion-based and solid-state processes. The latter includes sintering-based technologies, which are aligned with conventional fabrication techniques, such as metal injection molding (MIM), and take advantage of the freeform fabrication of the initial green part. In the present work, 17-4PH stainless steel samples were fabricated by material extrusion, or rather bound metal deposition (BMD), a solid-state AM technology. The powder-based raw material was characterized together with samples fabricated using different angular infill strategies. By coupling different characterization technologies, it was possible to identify and classify major properties and defects of the raw material and the fabricated samples. In addition, microstructural modifications were found to be linked with the mesostructural defects typical of the BMD solid-state additive manufacturing technology applied to metals.

引用

页数：18

共 51 条

[1]

Abbaschian Reza, 2009, Physical Metallurgy Principles, Vfourth

[2] Effect of Layer Directions on Internal Structures and Tensile Properties of 17-4PH Stainless Steel Parts Fabricated by Fused Deposition of Metals [J].