Microstructure and performance of TiAlBeSc alloys with low density

Lan Li; Li Huang; Xiping Song; Feng Ye; Junpin Lin; Guoliang Chen

Microstructure and performance of TiAlBeSc alloys with low density

Lan Li
, Li Huang
, Xiping Song
, Feng Ye^*
, Junpin Lin
, Guoliang Chen

^*Corresponding author for this work

University of Science and Technology Beijing

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

2 Scopus citations

Abstract

A new-type of low density TiAlBeSc alloy system was prepared by vacuum arc melting. The lowest density is 3.289 g/cm ³. Its microstructures, thermal stability were studied using SEM (EDS), XRD, nanoindentation and DTA methods. The results show that the TiAlBeSc alloy system forms stable intermetallic compound and solid solution. No transformation occurs below 1000°C. These alloys exhibit a very high thermal stability with a melting point above 1100°C. For the equimolar TiAlBeSc alloy, 25% (atomic percentage) beryllium is totally dissolved in scandium lattice. The dendritic TiAl phase with L10 ordered structure is uniformly distributed in α-Sc matrix which exhibits excellent mechanical properties with hardness 7330 MPa. Copyright

Original language	English
Pages (from-to)	826-829
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	41
Issue number	5
State	Published - May 2012
Externally published	Yes

Keywords

Intermetallics
Low density alloy
Solid solution
TiAlBeSc

Cite this

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title = "Microstructure and performance of TiAlBeSc alloys with low density",

abstract = "A new-type of low density TiAlBeSc alloy system was prepared by vacuum arc melting. The lowest density is 3.289 g/cm 3. Its microstructures, thermal stability were studied using SEM (EDS), XRD, nanoindentation and DTA methods. The results show that the TiAlBeSc alloy system forms stable intermetallic compound and solid solution. No transformation occurs below 1000°C. These alloys exhibit a very high thermal stability with a melting point above 1100°C. For the equimolar TiAlBeSc alloy, 25\% (atomic percentage) beryllium is totally dissolved in scandium lattice. The dendritic TiAl phase with L10 ordered structure is uniformly distributed in α-Sc matrix which exhibits excellent mechanical properties with hardness 7330 MPa. Copyright",

keywords = "Intermetallics, Low density alloy, Solid solution, TiAlBeSc",

author = "Lan Li and Li Huang and Xiping Song and Feng Ye and Junpin Lin and Guoliang Chen",

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TY - JOUR

T1 - Microstructure and performance of TiAlBeSc alloys with low density

AU - Li, Lan

AU - Huang, Li

AU - Song, Xiping

AU - Ye, Feng

AU - Lin, Junpin

AU - Chen, Guoliang

PY - 2012/5

Y1 - 2012/5

N2 - A new-type of low density TiAlBeSc alloy system was prepared by vacuum arc melting. The lowest density is 3.289 g/cm 3. Its microstructures, thermal stability were studied using SEM (EDS), XRD, nanoindentation and DTA methods. The results show that the TiAlBeSc alloy system forms stable intermetallic compound and solid solution. No transformation occurs below 1000°C. These alloys exhibit a very high thermal stability with a melting point above 1100°C. For the equimolar TiAlBeSc alloy, 25% (atomic percentage) beryllium is totally dissolved in scandium lattice. The dendritic TiAl phase with L10 ordered structure is uniformly distributed in α-Sc matrix which exhibits excellent mechanical properties with hardness 7330 MPa. Copyright

AB - A new-type of low density TiAlBeSc alloy system was prepared by vacuum arc melting. The lowest density is 3.289 g/cm 3. Its microstructures, thermal stability were studied using SEM (EDS), XRD, nanoindentation and DTA methods. The results show that the TiAlBeSc alloy system forms stable intermetallic compound and solid solution. No transformation occurs below 1000°C. These alloys exhibit a very high thermal stability with a melting point above 1100°C. For the equimolar TiAlBeSc alloy, 25% (atomic percentage) beryllium is totally dissolved in scandium lattice. The dendritic TiAl phase with L10 ordered structure is uniformly distributed in α-Sc matrix which exhibits excellent mechanical properties with hardness 7330 MPa. Copyright

KW - Intermetallics

KW - Low density alloy

KW - Solid solution

KW - TiAlBeSc

UR - https://www.scopus.com/pages/publications/84863205092

M3 - 文章

AN - SCOPUS:84863205092

SN - 1002-185X

VL - 41

SP - 826

EP - 829

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

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

IS - 5

ER -

Microstructure and performance of TiAlBeSc alloys with low density

Abstract

Keywords

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