Open-Cellular Co-Base and Ni-Base Superalloys Fabricated by Electron Beam Melting

Materials

Lawrence Murr¹  Shujun Li²  Yuxing Tian²  Krista Amato¹  Edwin Martinez¹ 

[1] Department of Metallurgical and Materials Engineering, The University of Texas at El Paso, El Paso, TX 79968, USA; E-Mails:;Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, Liaoning 11016, China; E-Mail:

关键词: superalloys;    mesh and foam structures;    dynamic stiffness;    electron beam melting;    microstructures;   

DOI  :  10.3390/ma4040782

来源: mdpi

【 摘 要 】

Reticulated mesh samples of Co-29Cr-6Mo alloy and Ni-21Cr-9Mo-4Nb alloy (625) and stochastic foam samples of Co-29Cr-6Mo alloy fabricated by electron beam melting were characterized by optical metallography, and the dynamic stiffness (Young’s modulus) was measured by resonant frequency analysis. The relative stiffness (E/E_s) versus relative density (ρ/ρ_s) plotted on a log-log basis resulted in a fitted straight line with a slope n ≅ 2, consistent with that for ideal open cellular materials.

【 授权许可】

CC BY   
© 2011 by the authors; licensee MDPI, Basel, Switzerland.