Effect of the Cr2Nb Phase on the Tensile Behavior and Oxidation Resistance of a Two-Step Heat-Treated Nb-24Ti-12Si-10Cr-2Al-2Hf Alloy

L. N. Jia; H. Zhang

doi:10.1007/s11661-017-4456-4

Effect of the Cr₂Nb Phase on the Tensile Behavior and Oxidation Resistance of a Two-Step Heat-Treated Nb-24Ti-12Si-10Cr-2Al-2Hf Alloy

L. N. Jia
, H. Zhang^*

^*Corresponding author for this work

School of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

After a two-step heat treatment, the Cr₂Nb particles in a directionally solidified Nb-24Ti-12Si-10Cr-2Al-2Hf (at pct, unless stated otherwise) alloy were substantially refined into nanoscale precipitates. These precipitates showed the following orientation relationship with the Nb_SS matrix: (111)_Nb//(111)_Cr2Nb, [110]_Nb//[220]_Cr2Nb. The formation of nanoscale Cr₂Nb particles via an aging heat treatment at 1273 K (1000 °C) improved the tensile strength to 950 MPa and reduced the alloy weight gain from 218.27 to 144.41 mg/cm².

Original language	English
Pages (from-to)	1295-1303
Number of pages	9
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	49
Issue number	4
DOIs	https://doi.org/10.1007/s11661-017-4456-4
State	Published - 1 Apr 2018

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title = "Effect of the Cr2Nb Phase on the Tensile Behavior and Oxidation Resistance of a Two-Step Heat-Treated Nb-24Ti-12Si-10Cr-2Al-2Hf Alloy",

abstract = "After a two-step heat treatment, the Cr2Nb particles in a directionally solidified Nb-24Ti-12Si-10Cr-2Al-2Hf (at pct, unless stated otherwise) alloy were substantially refined into nanoscale precipitates. These precipitates showed the following orientation relationship with the NbSS matrix: (111)Nb//(111)Cr2Nb, [110]Nb//[220]Cr2Nb. The formation of nanoscale Cr2Nb particles via an aging heat treatment at 1273 K (1000 °C) improved the tensile strength to 950 MPa and reduced the alloy weight gain from 218.27 to 144.41 mg/cm2.",

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T1 - Effect of the Cr2Nb Phase on the Tensile Behavior and Oxidation Resistance of a Two-Step Heat-Treated Nb-24Ti-12Si-10Cr-2Al-2Hf Alloy

AU - Jia, L. N.

AU - Zhang, H.

PY - 2018/4/1

Y1 - 2018/4/1

N2 - After a two-step heat treatment, the Cr2Nb particles in a directionally solidified Nb-24Ti-12Si-10Cr-2Al-2Hf (at pct, unless stated otherwise) alloy were substantially refined into nanoscale precipitates. These precipitates showed the following orientation relationship with the NbSS matrix: (111)Nb//(111)Cr2Nb, [110]Nb//[220]Cr2Nb. The formation of nanoscale Cr2Nb particles via an aging heat treatment at 1273 K (1000 °C) improved the tensile strength to 950 MPa and reduced the alloy weight gain from 218.27 to 144.41 mg/cm2.

AB - After a two-step heat treatment, the Cr2Nb particles in a directionally solidified Nb-24Ti-12Si-10Cr-2Al-2Hf (at pct, unless stated otherwise) alloy were substantially refined into nanoscale precipitates. These precipitates showed the following orientation relationship with the NbSS matrix: (111)Nb//(111)Cr2Nb, [110]Nb//[220]Cr2Nb. The formation of nanoscale Cr2Nb particles via an aging heat treatment at 1273 K (1000 °C) improved the tensile strength to 950 MPa and reduced the alloy weight gain from 218.27 to 144.41 mg/cm2.

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SN - 1073-5623

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JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

IS - 4

ER -

Effect of the Cr₂Nb Phase on the Tensile Behavior and Oxidation Resistance of a Two-Step Heat-Treated Nb-24Ti-12Si-10Cr-2Al-2Hf Alloy

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