Microstructure and mechanical behavior of nanotwinned AlTi alloys with 9R phase

Y. F. Zhang; S. Xue; Q. Li; C. Fan; R. Su; Jie Ding; Han Wang; H. Wang; X. Zhang

doi:10.1016/j.scriptamat.2018.01.010

Microstructure and mechanical behavior of nanotwinned AlTi alloys with 9R phase

Y. F. Zhang
, S. Xue
, Q. Li
, C. Fan
, R. Su
, Jie Ding
, Han Wang
, H. Wang
, X. Zhang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

61 Citations (Scopus)

Abstract

Nanotwinned metals have shown high strength and ductility. However, metals with high stacking fault energy, such as Al, typically do not contain high-density growth twins or stacking faults. Here we show that by using a small amount of Ti solutes, 0.15–5.1 at.%, fine grains with a large population of extended incoherent twin boundaries bounding broad 9R phase form in sputtered AlTi films. These nanotwinned AlTi films have hardness as high as 2 GPa. This study provides an alternative approach to design high-strength Al alloys by grain refinement and introducing high-density twin boundaries and 9R phase.

Original language	English
Pages (from-to)	5-9
Journal	Scripta Materialia
Volume	148
DOIs	https://doi.org/10.1016/j.scriptamat.2018.01.010
Publication status	Published - 15 Apr 2018
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work is supported by the Department of Energy-Office of Basic Energy Sciences (grant number: DE-SC0016337); H. W acknowledges financial support by the Office of Naval Research (s (N000141612778 and N000141712087)) program managed by Dr. Antti Makinen. J. D acknowledges support from the DOE-Nuclear Energy under DE-NE0008549.

Research Keywords

Aluminum alloys
ITB and 9R
Nanoindentation
Sputtering
Thin film

Access Output

10.1016/j.scriptamat.2018.01.010

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{332c914383f0450b8a8e6ecc3a6266a6,

title = "Microstructure and mechanical behavior of nanotwinned AlTi alloys with 9R phase",

abstract = "Nanotwinned metals have shown high strength and ductility. However, metals with high stacking fault energy, such as Al, typically do not contain high-density growth twins or stacking faults. Here we show that by using a small amount of Ti solutes, 0.15–5.1 at.\%, fine grains with a large population of extended incoherent twin boundaries bounding broad 9R phase form in sputtered AlTi films. These nanotwinned AlTi films have hardness as high as 2 GPa. This study provides an alternative approach to design high-strength Al alloys by grain refinement and introducing high-density twin boundaries and 9R phase.",

keywords = "Aluminum alloys, ITB and 9R, Nanoindentation, Sputtering, Thin film",

author = "Zhang, \{Y. F.\} and S. Xue and Q. Li and C. Fan and R. Su and Jie Ding and Han Wang and H. Wang and X. Zhang",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

year = "2018",

month = apr,

day = "15",

doi = "10.1016/j.scriptamat.2018.01.010",

language = "English",

volume = "148",

pages = "5--9",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

}

TY - JOUR

T1 - Microstructure and mechanical behavior of nanotwinned AlTi alloys with 9R phase

AU - Zhang, Y. F.

AU - Xue, S.

AU - Li, Q.

AU - Fan, C.

AU - Su, R.

AU - Ding, Jie

AU - Wang, Han

AU - Wang, H.

AU - Zhang, X.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/4/15

Y1 - 2018/4/15

N2 - Nanotwinned metals have shown high strength and ductility. However, metals with high stacking fault energy, such as Al, typically do not contain high-density growth twins or stacking faults. Here we show that by using a small amount of Ti solutes, 0.15–5.1 at.%, fine grains with a large population of extended incoherent twin boundaries bounding broad 9R phase form in sputtered AlTi films. These nanotwinned AlTi films have hardness as high as 2 GPa. This study provides an alternative approach to design high-strength Al alloys by grain refinement and introducing high-density twin boundaries and 9R phase.

AB - Nanotwinned metals have shown high strength and ductility. However, metals with high stacking fault energy, such as Al, typically do not contain high-density growth twins or stacking faults. Here we show that by using a small amount of Ti solutes, 0.15–5.1 at.%, fine grains with a large population of extended incoherent twin boundaries bounding broad 9R phase form in sputtered AlTi films. These nanotwinned AlTi films have hardness as high as 2 GPa. This study provides an alternative approach to design high-strength Al alloys by grain refinement and introducing high-density twin boundaries and 9R phase.

KW - Aluminum alloys

KW - ITB and 9R

KW - Nanoindentation

KW - Sputtering

KW - Thin film

UR - https://www.scopus.com/pages/publications/85041462059

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85041462059&origin=recordpage

U2 - 10.1016/j.scriptamat.2018.01.010

DO - 10.1016/j.scriptamat.2018.01.010

M3 - RGC 21 - Publication in refereed journal

SN - 1359-6462

VL - 148

SP - 5

EP - 9

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Microstructure and mechanical behavior of nanotwinned AlTi alloys with 9R phase

Abstract

Bibliographical note

Funding

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this