EBSD-data analysis of an additive manufactured maraging 300 steel submitted to different tempering and aging treatments

被引：19
作者：
Conde, F. F. [1 ]
Ribamar, G. G. [2 ]
Escobar, J. D. [2 ]
Jardini, A. L. [3 ]
Oliveira, M. F. [1 ]
Oliveira, J. P. [4 ]
Avila, J. A. [5 ]
机构：
[1] Univ Sao Paulo, USP EESC Dept Mat Engn, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, Brazil
[2] Univ Sao Paulo, USP PMT Dept Met & Mat Engn, Av Prof Mello Moraes 2463, BR-05508030 Sao Paulo, Brazil
[3] Univ Estadual Campinas, Fac Chem Engn, BIOFABRIS Natl Inst Sci & Technol Biomfg, BR-13081970 Campinas, SP, Brazil
[4] Univ NOVA Lisboa, NOVA Sch Sci & Technol, Dept Mat Sci, CENIMAT I3N, P-2829516 Caparica, Portugal
[5] Univ Politecn Cataluna, Barcelona Sch Engn ETSEIB, Dept Strength Mat & Struct Engn, Barcelona, Spain
来源：
MATERIALS CHARACTERIZATION | 2023年 / 203卷
基金：
巴西圣保罗研究基金会;
关键词：
Maraging; 300; Laser additive manufacturing; Powder bed fusion; electron backscatter diffraction; MECHANICAL-PROPERTIES; MICROSTRUCTURE; EVOLUTION; DIFFRACTION;
D O I：
10.1016/j.matchar.2023.113064
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Maraging is a high alloy steel sensitive to the precipitation of intermetallics from a supersaturated solid solution during aging heat treatments. The precipitation phenomenon is well described in the literature, which gave rise to the alloy name regarding a martensite matrix with precipitates formed by aging treatment. Many studies have been performed to characterize this material, usually subjected to many sample preparations for transmission microscopy, which is very laborious, and few EBSD analyses. Therefore, in this work, a large study was conducted using electron backscatter diffraction (EBSD) to analyze maraging microstructures through band-contrast, kernel average misorientation (KAM), grain orientation spread (GOS), and misorientation distribution. Our results show that solubilization of the additive manufactured maraging steel resulted in a more homogeneous microstructure with new angle grain boundaries. Furthermore, tempering heat treatments relieve martensite strain, increasing band contrast values. Posterior aging presented a low impact on the results of EBSD analysis.
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页数：9
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