Experimental determination of cooling rates in selectively laser-melted eutectic Al-33Cu

被引：144

作者：

Pauly, Simon ^{[1
]}

Wang, Pei ^{[1
]}

Kuehn, Uta ^{[1
]}

Kosiba, Konrad ^{[1
]}

机构：

[1] IFW Dresden, Inst Complex Mat, Helmholtzstr 20, D-01069 Dresden, Germany

来源：

ADDITIVE MANUFACTURING | 2018年 / 22卷

关键词：

Selective laser melting; Al-33Cu; Lamellar spacing; Cooling rate; Volumetric energy density; THERMAL-BEHAVIOR; RAPID SOLIDIFICATION; METALLIC GLASSES; ENERGY DENSITY; MICROSTRUCTURE; DEPOSITION; DESIGN; ALLOYS; SUPERALLOY; MECHANISMS;

D O I：

10.1016/j.addma.2018.05.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The cooling rates inherent to selective laser melting (SLM) were experimentally determined by processing the eutectic Al-33Cu (wt.%) alloy. Two different parameter sets yielding an identical volumetric energy density were employed to produce the samples. Based on the average spacing of the Al and CuAl2 lamellae, the cooling rates in different parts of the SLM specimens were estimated. At a high laser power (300 W) the cooling rate amounts to 10(4) K/s and at the lower laser power (200 W) to 10(5) K/s. The present approach proves to be useful for exploring the thermal history of additively manufactured metallic components.

引用

页码：753 / 757

页数：5

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