Creep behavior of a duplex high-Nb containing TiAl alloy

Sufang He; Junpin Lin; Xiangjun Xu; Jianfeng Gao; Yanli Wang; Xiping Song; Guoliang Chen

Creep behavior of a duplex high-Nb containing TiAl alloy

Sufang He^*
, Junpin Lin
, Xiangjun Xu
, Jianfeng Gao
, Yanli Wang
, Xiping Song
, Guoliang Chen

^*Corresponding author for this work

University of Science and Technology Beijing

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

6 Scopus citations

Abstract

The creep behavior of a two phase Ti-45Al-9 (Nb,W,B,Y) alloy was investigated at 760°C and 815°C, under stresses ranging from 80 MPa to 300 MPa. The initial microstructure was found to be fine duplex micro structure. The comparison of the creep properties was presented between the duplex and the full lamellar microstructure of high-Nb containing TiAl alloy. It can be confirmed that the duplex alloy studied exhibit lower creep resistance and a minimum creep rate higher than that of the full lamellar Ti46A18.5Nb0.1C0.2B alloy by one order of magnitude. Creep stress exponents show that at 760°C-815°C, 80 MPa-300 MPa, the creep mechanism of this alloy is dislocation climb.

Original language	English
Pages (from-to)	257-260
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	35
Issue number	2
State	Published - Feb 2006
Externally published	Yes

Keywords

Creep properties
Minimum creep rate
TiAl

Cite this

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title = "Creep behavior of a duplex high-Nb containing TiAl alloy",

abstract = "The creep behavior of a two phase Ti-45Al-9 (Nb,W,B,Y) alloy was investigated at 760°C and 815°C, under stresses ranging from 80 MPa to 300 MPa. The initial microstructure was found to be fine duplex micro structure. The comparison of the creep properties was presented between the duplex and the full lamellar microstructure of high-Nb containing TiAl alloy. It can be confirmed that the duplex alloy studied exhibit lower creep resistance and a minimum creep rate higher than that of the full lamellar Ti46A18.5Nb0.1C0.2B alloy by one order of magnitude. Creep stress exponents show that at 760°C-815°C, 80 MPa-300 MPa, the creep mechanism of this alloy is dislocation climb.",

keywords = "Creep properties, Minimum creep rate, TiAl",

author = "Sufang He and Junpin Lin and Xiangjun Xu and Jianfeng Gao and Yanli Wang and Xiping Song and Guoliang Chen",

year = "2006",

month = feb,

language = "英语",

volume = "35",

pages = "257--260",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

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TY - JOUR

T1 - Creep behavior of a duplex high-Nb containing TiAl alloy

AU - He, Sufang

AU - Lin, Junpin

AU - Xu, Xiangjun

AU - Gao, Jianfeng

AU - Wang, Yanli

AU - Song, Xiping

AU - Chen, Guoliang

PY - 2006/2

Y1 - 2006/2

N2 - The creep behavior of a two phase Ti-45Al-9 (Nb,W,B,Y) alloy was investigated at 760°C and 815°C, under stresses ranging from 80 MPa to 300 MPa. The initial microstructure was found to be fine duplex micro structure. The comparison of the creep properties was presented between the duplex and the full lamellar microstructure of high-Nb containing TiAl alloy. It can be confirmed that the duplex alloy studied exhibit lower creep resistance and a minimum creep rate higher than that of the full lamellar Ti46A18.5Nb0.1C0.2B alloy by one order of magnitude. Creep stress exponents show that at 760°C-815°C, 80 MPa-300 MPa, the creep mechanism of this alloy is dislocation climb.

AB - The creep behavior of a two phase Ti-45Al-9 (Nb,W,B,Y) alloy was investigated at 760°C and 815°C, under stresses ranging from 80 MPa to 300 MPa. The initial microstructure was found to be fine duplex micro structure. The comparison of the creep properties was presented between the duplex and the full lamellar microstructure of high-Nb containing TiAl alloy. It can be confirmed that the duplex alloy studied exhibit lower creep resistance and a minimum creep rate higher than that of the full lamellar Ti46A18.5Nb0.1C0.2B alloy by one order of magnitude. Creep stress exponents show that at 760°C-815°C, 80 MPa-300 MPa, the creep mechanism of this alloy is dislocation climb.

KW - Creep properties

KW - Minimum creep rate

KW - TiAl

UR - https://www.scopus.com/pages/publications/33645646718

M3 - 文章

AN - SCOPUS:33645646718

SN - 1002-185X

VL - 35

SP - 257

EP - 260

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 2

ER -

Creep behavior of a duplex high-Nb containing TiAl alloy

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Keywords

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