Microstructure Characterization of Tungsten Based Alloys for Fusion Application

Archives of Metallurgy and Materials

M. Wirtz¹  A. Kruk¹  C. Thomser²  G. Cempura²  A. Czyrska-Filemonowicz³ 

[1] Faculty of Metals Engineering and Industrial Computer Science, al. A. Mickiewicza 30, 30-059 Kraków, Poland;Agh University of Science and Technology, International Centre of Electron Microscopy for Materials Science &Forschungszentrum Jülich, Institute of Energy and Climate Research, 52-428 Jülich, Germany

关键词: Keywords : fusion;    tungsten based alloys;    electron microscopy;    electron tomography;   

DOI  :  10.2478/amm-2013-0020

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The microstructure of two tungsten based alloys (W-1.1%TiC and W-1.7% TiC) was characterized using light microscopy, analytical electron microscopy and electron tomography. These alloys represent a class of W based dispersion strengthened alloys with TiC used as strengthening particles. Addition of TiC leads to improved creep resistance and tensile strength of the W based alloys. The results show that the W-1.7%TiC alloy exhibits large scatter in grain size, much higher porosity and contains also Ti-O particles. The W-1.1%TiC alloy has fine grained microstructure with uniformly distributed fine TiC particles within the matrix and low porosity. As a result of the different microstructure, the W-1.1%TiC alloy exhibits better mechanical properties, when compared to the W-1.7%TiC alloy.

【 授权许可】

Unknown