公开(公告)号：US20180185961A1

公开(公告)日：2018-07-05

申请号：US15004028

申请日：2016-01-22

Applicant: ALSTOM Technology Ltd

Inventor： Hossein Meidani ,  Felix Roerig ,  Thomas Etter

IPC: B23K26/14 ,  B23K26/08 ,  B23K26/142 ,  B23K26/16 ,  B23K26/342

CPC classification number: B23K26/1438 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2003/1057 ,  B22F2201/00 ,  B22F2999/00 ,  B23K26/08 ,  B23K26/14 ,  B23K26/142 ,  B23K26/1462 ,  B23K26/147 ,  B23K26/16 ,  B23K26/21 ,  B23K26/342 ,  B29C64/153 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  Y02P10/295

Abstract: A method for material processing is disclosed, the method comprising applying a laser beam, directing the laser beam to a processing location to melt material at the processing location, and providing a shielding gas flow. The shielding gas flow is controlled dependent on at least one of a processing location position, a processing advance vector, and a processing trajectory.

公开(公告)号：US20150344994A1

公开(公告)日：2015-12-03

申请号：US14715882

申请日：2015-05-19

Applicant: ALSTOM Technology Ltd

Inventor： Thomas ETTER ,  Hossein Meidani ,  Maxim Konter

IPC: C22C19/05

CPC classification number: C22C19/057 ,  B22F3/1055 ,  B33Y70/00 ,  C22C1/0433 ,  Y02P10/295

Abstract: The application relates to the technology of producing three-dimensional articles by means of powder-based additive manufacturing, such as selective laser melting (SLM) or electron beam melting (EBM). It refers to a Nickel-base superalloy powder, wherein the superalloy powder has a chemical composition that allows establishing a gamma-prime precipitation content of 60-70 vol.-% in the superalloy in a heat treated condition. The powder has a powder size distribution between 10 and 100 μm and a spherical morphology. The ratios of the content (in weight-%) of the alloying elements C, B, Hf, Zr, Si are the following: C/B=10-32; C/Hf>2; C/Zr>8; C/Si>1. A preferred embodiment includes of the following chemical composition (in weight-%): 7.7-8.3 Cr; 5.0-5.25 Co; 2.0-2.1 Mo;7.8-8.3 W; 5.8-6.1 Ta; 4.7-5.1 Al; 1.1-1.4 Ti; 0.08-0.16 C; 0.005-0.008 B; 0-0.04 Hf;0-0.01 Zr; 0-0.08 Si; the remainder being Ni and unavoidable impurities.

Abstract translation: 本申请涉及通过粉末基添加剂制造如选择性激光熔化（SLM）或电子束熔化（EBM）生产三维制品的技术。 它是指镍基超合金粉末，其中超合金粉末具有允许在热处理条件下在超合金中建立60-70体积％的γ-析出含量的化学组成。 粉末的粉末粒度分布在10〜100μm之间，呈球状。 合金元素C，B，Hf，Zr，Si的含量（重量％）的比例如下：C / B = 10-32; C / Hf> 2; C / Zr> 8; C / Si> 1。 优选的实施方案包括以下化学组成（重量％）：7.7-8.3Cr; 5.0-5.25公司 2.0-2.1 Mo; 7.8-8.3 W; 5.8-6.1 Ta; 4.7-5.1铝; 1.1-1.4 Ti; 0.08-0.16 C; 0.005-0.008 B; 0-0.04 Hf; 0-0.01 Zr; 0-0.08 Si; 其余为Ni和不可避免的杂质。