Mossbauer Spectroscopy for Additive Manufacturing by Selective Laser Melting

被引：7

作者：

Ivanova, Tatiana ^{[1
]}

Mashlan, Miroslav ^{[1
]}

Ingr, Tomas ^{[1
]}

Dolakova, Hana ^{[2
]}

Sarychev, Dmitry ^{[3
]}

Sedlacova, Anna ^{[1
]}

机构：

[1] Palacky Univ, Fac Sci, Dept Expt Phys, 17,Listopadu 1192-12, Olomouc 77900, Czech Republic

[2] Palacky Univ, Sci & Technol Pk, Slechtitelu 21, Olomouc 78371, Czech Republic

[3] Southern Fed Univ, Res Inst Phys, Stachki Av 194, Rostov Na Donu 344090, Russia

来源：

METALS | 2022年 / 12卷 / 04期

关键词：

selective laser melting; stainless steel (1; 4404); maraging steel (1; 2709); austenitic phase; ferritic phase; Mossbauer spectroscopy; scanning electron microscope; powder X-ray diffraction; SURFACE MICROMORPHOLOGY; STAINLESS;

D O I：

10.3390/met12040551

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Selective laser melting (SLM) is a technology of layer-by-layer additive manufacturing using a laser. This technology allows one to get complex-shaped, three-dimensional (3D) specimens directly from metal powder. In this technology, various metal powders are used, including different steels. Stainless steel 1.4404 (CL20ES) and maraging steel 1.2709 (CL50WS) have been investigated. The surface of samples manufactured from CL20ES and CL50WS powders by SLM (with and without combination sandblasting and annealing) was studied by conversion X-ray Mossbauer spectroscopy (CXMS) and conversion electron Mossbauer spectroscopy (CEMS). The surface morphology, elemental composition, and structure were examined by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray powder diffraction (XRD). Samples with sandblasted (corundum powder) and non-sandblasted surfaces were annealed at 540 degrees C (CL50WS) or 550 degrees C (CL20ES) for 6 h in air. Oxidation processes on surfaces of samples manufactured from both initial powders were observed after post-process annealing by CEMS and CXMS, as well as confirmed by XRD. The transformation of the austenitic to ferritic phase was observed in a sandblasted and annealed CL20ES sample by CEMS and XRD.

引用

页数：15

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