Room temperature mechanical properties and high temperature oxidation resistance of a high Cr containing Nb-Si based alloy

L. N. Jia; J. F. Weng; Z. Li; Z. Hong; L. F. Su; H. Zhang

doi:10.1016/j.msea.2014.11.001

Room temperature mechanical properties and high temperature oxidation resistance of a high Cr containing Nb-Si based alloy

L. N. Jia
, J. F. Weng
, Z. Li
, Z. Hong
, L. F. Su
, H. Zhang^*

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

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

48 Scopus citations

Abstract

A high Cr containing Nb-Si based alloy (Nb-12Si-24Ti-10Cr-2Al-2Hf) was prepared by non-equilibrium rapid directional solidification, and then was heat treated at 1400°C for 10h. The microstructure was greatly improved by these processes. Big block-like Nb₅Si₃ was avoided and vermicular one as a strengthening phase uniformly distributed in the toughening Nb_SS matrix. Exciting fracture toughness (17.9MPam^1/2) and tensile strength (771MPa) were achieved for this high Cr containing Nb-Si based alloy. Oxidation behaviors of this alloy at 1200°C and 1250°C were also studied.

Original language	English
Pages (from-to)	32-37
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	623
DOIs	https://doi.org/10.1016/j.msea.2014.11.001
State	Published - 9 Jan 2015

Keywords

Directional solidification
Heat treatment
High Cr containing Nb-Si based alloy
Mechanical property
Oxidation resistance

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10.1016/j.msea.2014.11.001

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title = "Room temperature mechanical properties and high temperature oxidation resistance of a high Cr containing Nb-Si based alloy",

abstract = "A high Cr containing Nb-Si based alloy (Nb-12Si-24Ti-10Cr-2Al-2Hf) was prepared by non-equilibrium rapid directional solidification, and then was heat treated at 1400°C for 10h. The microstructure was greatly improved by these processes. Big block-like Nb5Si3 was avoided and vermicular one as a strengthening phase uniformly distributed in the toughening NbSS matrix. Exciting fracture toughness (17.9MPam1/2) and tensile strength (771MPa) were achieved for this high Cr containing Nb-Si based alloy. Oxidation behaviors of this alloy at 1200°C and 1250°C were also studied.",

keywords = "Directional solidification, Heat treatment, High Cr containing Nb-Si based alloy, Mechanical property, Oxidation resistance",

author = "Jia, \{L. N.\} and Weng, \{J. F.\} and Z. Li and Z. Hong and Su, \{L. F.\} and H. Zhang",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier B.V.",

year = "2015",

month = jan,

day = "9",

doi = "10.1016/j.msea.2014.11.001",

language = "英语",

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TY - JOUR

T1 - Room temperature mechanical properties and high temperature oxidation resistance of a high Cr containing Nb-Si based alloy

AU - Jia, L. N.

AU - Weng, J. F.

AU - Li, Z.

AU - Hong, Z.

AU - Su, L. F.

AU - Zhang, H.

PY - 2015/1/9

Y1 - 2015/1/9

N2 - A high Cr containing Nb-Si based alloy (Nb-12Si-24Ti-10Cr-2Al-2Hf) was prepared by non-equilibrium rapid directional solidification, and then was heat treated at 1400°C for 10h. The microstructure was greatly improved by these processes. Big block-like Nb5Si3 was avoided and vermicular one as a strengthening phase uniformly distributed in the toughening NbSS matrix. Exciting fracture toughness (17.9MPam1/2) and tensile strength (771MPa) were achieved for this high Cr containing Nb-Si based alloy. Oxidation behaviors of this alloy at 1200°C and 1250°C were also studied.

AB - A high Cr containing Nb-Si based alloy (Nb-12Si-24Ti-10Cr-2Al-2Hf) was prepared by non-equilibrium rapid directional solidification, and then was heat treated at 1400°C for 10h. The microstructure was greatly improved by these processes. Big block-like Nb5Si3 was avoided and vermicular one as a strengthening phase uniformly distributed in the toughening NbSS matrix. Exciting fracture toughness (17.9MPam1/2) and tensile strength (771MPa) were achieved for this high Cr containing Nb-Si based alloy. Oxidation behaviors of this alloy at 1200°C and 1250°C were also studied.

KW - Directional solidification

KW - Heat treatment

KW - High Cr containing Nb-Si based alloy

KW - Mechanical property

KW - Oxidation resistance

UR - https://www.scopus.com/pages/publications/84912049368

U2 - 10.1016/j.msea.2014.11.001

DO - 10.1016/j.msea.2014.11.001

M3 - 文章

AN - SCOPUS:84912049368

SN - 0921-5093

VL - 623

SP - 32

EP - 37

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Room temperature mechanical properties and high temperature oxidation resistance of a high Cr containing Nb-Si based alloy

Abstract

Keywords

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