MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Preparation of Ti Ternary Alloys by Addition of Si to Ti-Mo Alloy Scraps for Carbonitride Application
Jung-Min OhKi-Min RohHanjung KwonBack-Kyu LeeChang-Youl SuhJae-Won Lim
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2015 Volume 56 Issue 1 Pages 167-170

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Abstract

In this study, Ti-Mo-Si ternary alloy ingots were prepared by the addition of Si (0.25–2.0 mass%) to Ti-10Mo alloy scraps in order to produce the raw materials for titanium carbonitride composites. To investigate the effects of Si addition, the prepared alloys were subjected to hardness, tensile strength, grain size, and phase analyses. The Si-added alloys showed no major changes in their O, N, and C impurity contents. Their hardness increased remarkably in proportion to an increase in the Si content, from 435 Hv to 601 Hv at 2.0 mass%. The tensile strength increased with Si addition up to a maximum of 1.0 mass%, reaching 883 MPa, but after this peak, it decreased sharply because of the brittleness that arose by the formation of titanium silicide.

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© 2014 The Japan Institute of Metals and Materials
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