Ti-15Mo-5Zr-3Al合金の表面改質-溶体化過程におけるイオン窒化-

概要

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β-type titanium alloys are a kind of age hardened alloys and are well known for easy working as well as for high specific strength and corrosion resistance. To take advantage of these properties, a large number of β-type alloys have been investigated and many are in practical use today. Titanium alloys, however, are inferior in terms of wear, abrasion and galling, and it is hoped that these problems may improved by surface hardening. In this investigation, Ti-15Mo-5Zr-3Al alloy, a β-type titanium alloy was ion-nitrided during solution treatment, and then aged.This method resulted in increased surface hardness due to the nitriding, and increased hardness in the bulk due to the aging. A TiN phase, not more than 2μm was observed by optical microscopy, and was comfirmed by X-ray diffractometry.
社団法人表面技術協会の論文