Processing of Haynes® 282® Alloy by Laser Powder Bed Fusion Technology

被引：7

作者：

Otto, Robert ^{[1
]}

Brotan, Vegard ^{[1
]}

Azar, Amin S. ^{[2
]}

Asebo, Olav ^{[1
]}

机构：

[1] SINTEF Mfg, SP Andersens Veg 5, N-7031 Trondheim, Norway

[2] SINTEF Ind, Forskningsveien 1, N-0373 Oslo, Norway

来源：

TMS 2019 148TH ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS | 2019年

关键词：

Powder bed fusion; Additive manufacturing; Haynes; 282; Superalloy;

D O I：

10.1007/978-3-030-05861-6_47

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Haynes (R) 282 (R) is a superalloy that offers excellent creep resistance up to 0.7 of its melting point. Promoted by aerospace industries, recommending a sound process window for additive manufacturing of this material is critical. In this study, the processing conditions were optimized by fabricating 84 test cubes using 36 different parameter sets. Thereafter, selected samples were solution annealed followed by a two-step aging for all. The cubes were optically analyzed for their porosity and defects to select the most promising parameters. Scanning electron microscopy (SEM) technique was employed to characterize those features. It was observed that selection of improper parameter combination has adverse effect on the porosity of the material and may cause systematic material cracking. Existing cracks were analyzed regarding their size and orientation pattern among selected and representative samples.

引用

页码：503 / 510

页数：8

共 9 条

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