Nitridation of γ-TiAl alloys by direct metal-gas reaction at 1000-1300 K

Two γ-TiAl alloys, Ti-47at%Al-2at%Nb-2at%Cr (MJ12) and Ti-47at%Al-2at%Nb-2at%Mn-0.8at%TiB2 (MJ47), were nitrided by direct metal-gas reaction at 1000-1300 K in 10 cm3s-1NH 3. X-ray diffraction revealed formation of TiN at 1100-1300 K. Knoop microhardness values of the alloys were increased with an i...

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Main Authors:	Somchai Thongtem, Chatdanai Boonruang, Titipun Thongtem, Michael McNallan
Format:	Journal
Published:	2018
Subjects:	Chemical Engineering Chemistry
Online Access:	https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=24944549943&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/62129
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Institution:	Chiang Mai University

id	th-cmuir.6653943832-62129
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spelling	th-cmuir.6653943832-621292018-09-11T09:22:33Z Nitridation of γ-TiAl alloys by direct metal-gas reaction at 1000-1300 K Somchai Thongtem Chatdanai Boonruang Titipun Thongtem Michael McNallan Chemical Engineering Chemistry Two γ-TiAl alloys, Ti-47at%Al-2at%Nb-2at%Cr (MJ12) and Ti-47at%Al-2at%Nb-2at%Mn-0.8at%TiB2 (MJ47), were nitrided by direct metal-gas reaction at 1000-1300 K in 10 cm3s-1NH 3. X-ray diffraction revealed formation of TiN at 1100-1300 K. Knoop microhardness values of the alloys were increased with an increase in the nitridation temperature. Microhardness values of MJ12 and MJ47 with 1300 K nitridation were respectively improved to 1.65 and 1.38 times those of the controls. Nitridation depth at a variety of temperature determined by Rutherford backscattering spectrometry was increased with an increase in the temperature. Ti, Al and N concentrations at a variety of depths analysed by scanning electron microscopy and energy dispersive X-ray linescanning are also explained. Copyright © 2005 John Wiley & Sons, Ltd. 2018-09-11T09:22:17Z 2018-09-11T09:22:17Z 2005-09-01 Journal 01422421 2-s2.0-24944549943 10.1002/sia.2074 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=24944549943&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/62129
institution	Chiang Mai University
building	Chiang Mai University Library
country	Thailand
collection	CMU Intellectual Repository
topic	Chemical Engineering Chemistry
spellingShingle	Chemical Engineering Chemistry Somchai Thongtem Chatdanai Boonruang Titipun Thongtem Michael McNallan Nitridation of γ-TiAl alloys by direct metal-gas reaction at 1000-1300 K
description	Two γ-TiAl alloys, Ti-47at%Al-2at%Nb-2at%Cr (MJ12) and Ti-47at%Al-2at%Nb-2at%Mn-0.8at%TiB2 (MJ47), were nitrided by direct metal-gas reaction at 1000-1300 K in 10 cm3s-1NH 3. X-ray diffraction revealed formation of TiN at 1100-1300 K. Knoop microhardness values of the alloys were increased with an increase in the nitridation temperature. Microhardness values of MJ12 and MJ47 with 1300 K nitridation were respectively improved to 1.65 and 1.38 times those of the controls. Nitridation depth at a variety of temperature determined by Rutherford backscattering spectrometry was increased with an increase in the temperature. Ti, Al and N concentrations at a variety of depths analysed by scanning electron microscopy and energy dispersive X-ray linescanning are also explained. Copyright © 2005 John Wiley & Sons, Ltd.
format	Journal
author	Somchai Thongtem Chatdanai Boonruang Titipun Thongtem Michael McNallan
author_facet	Somchai Thongtem Chatdanai Boonruang Titipun Thongtem Michael McNallan
author_sort	Somchai Thongtem
title	Nitridation of γ-TiAl alloys by direct metal-gas reaction at 1000-1300 K
title_short	Nitridation of γ-TiAl alloys by direct metal-gas reaction at 1000-1300 K
title_full	Nitridation of γ-TiAl alloys by direct metal-gas reaction at 1000-1300 K
title_fullStr	Nitridation of γ-TiAl alloys by direct metal-gas reaction at 1000-1300 K
title_full_unstemmed	Nitridation of γ-TiAl alloys by direct metal-gas reaction at 1000-1300 K
title_sort	nitridation of γ-tial alloys by direct metal-gas reaction at 1000-1300 k
publishDate	2018
url	https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=24944549943&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/62129
_version_	1681425749480833024

Nitridation of γ-TiAl alloys by direct metal-gas reaction at 1000-1300 K

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