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Microstructure Development During Liquid Phase Sintering Studied Using Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS)

  • : Raquel de Oro Calderon1, Christian Gierl-Mayer1, Herbert Danninger1, Maximilian Bonta1, Andreas Limbeck1
  • : 1TU Wien
  • : PDF Download
  • : 2016

Abstract

Liquid phase sintering can be advantageously used to enhance diffusion processes and to promote the distribution of alloying elements. The use of master alloys with low melting point compositions allow designing liquids with “tailored” properties, particularly with regard to their interaction with the solid -non dissolutive (infiltrating) vs. dissolutive (non-infiltrating) liquids- which is critical for the homogenization of the microstructure. In this work, Laser ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) is used to map the composition of sintered steels in the areas surrounding the master alloy particles, in order to correlate the efficiency in the distribution of alloying elements with the development of different microstructures at increasing temperatures. A first approach on the quantitative determination of Cr, Mn, Si and even C distribution at increasing temperatures, in steels containing different types of master alloys, is presented in this study.

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