Structural Modification of Al65Cu16.5Ti18.5 Amorphous Powder through Annealing and Post Milling: Improving Thermal Stability

Zhen Tan; Lu Wang; Yunfei Xue; Xingwang Cheng; Long Zhang

doi:10.1016/j.jmst.2016.03.007

Structural Modification of Al₆₅Cu_16.5Ti_18.5 Amorphous Powder through Annealing and Post Milling: Improving Thermal Stability

Zhen Tan, Lu Wang, Yunfei Xue^*, Xingwang Cheng, Long Zhang

^*Corresponding author for this work

School of Material Science and Engineering

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

7 Citations (Scopus)

Abstract

To improve thermal stability of the Al₆₅Cu_16.5Ti_18.5 amorphous powder, structural modification of the amorphous powder was performed through annealing and post milling. Annealing above the crystallization temperature (T_x) not only induced nanoscale intermetallics to precipitate in the amorphous powder, but also increased Cu atomic percentage within the residual amorphous phase. Post milling induced the amorphization of the nanocrystal intermetallics and the formation of Cu₉Al₄ from the residual amorphous phase. Thus, a mixed structure consisting of amorphous phase and Cu₉Al₄ was obtained in the powder after annealing and post milling (the APMed powder). The phase constituent in the APMed powder did not change during the post annealing, which exhibited significantly improved thermal stability in comparison with the as-milled amorphous powder.

Original language	English
Pages (from-to)	1326-1331
Number of pages	6
Journal	Journal of Materials Science and Technology
Volume	32
Issue number	12
DOIs	https://doi.org/10.1016/j.jmst.2016.03.007
Publication status	Published - 1 Dec 2016

Keywords

Amorphous powder
Heat treatment
Mechanical alloying
Thermal stability
Transmission electron microscopy

Access to Document

10.1016/j.jmst.2016.03.007

Cite this

@article{4dea9deb9b32466c83e2111a77885d5b,

title = "Structural Modification of Al65Cu16.5Ti18.5 Amorphous Powder through Annealing and Post Milling: Improving Thermal Stability",

abstract = "To improve thermal stability of the Al65Cu16.5Ti18.5 amorphous powder, structural modification of the amorphous powder was performed through annealing and post milling. Annealing above the crystallization temperature (Tx) not only induced nanoscale intermetallics to precipitate in the amorphous powder, but also increased Cu atomic percentage within the residual amorphous phase. Post milling induced the amorphization of the nanocrystal intermetallics and the formation of Cu9Al4 from the residual amorphous phase. Thus, a mixed structure consisting of amorphous phase and Cu9Al4 was obtained in the powder after annealing and post milling (the APMed powder). The phase constituent in the APMed powder did not change during the post annealing, which exhibited significantly improved thermal stability in comparison with the as-milled amorphous powder.",

keywords = "Amorphous powder, Heat treatment, Mechanical alloying, Thermal stability, Transmission electron microscopy",

author = "Zhen Tan and Lu Wang and Yunfei Xue and Xingwang Cheng and Long Zhang",

note = "Publisher Copyright: {\textcopyright} 2016",

year = "2016",

month = dec,

day = "1",

doi = "10.1016/j.jmst.2016.03.007",

language = "English",

volume = "32",

pages = "1326--1331",

journal = "Journal of Materials Science and Technology",

issn = "1005-0302",

publisher = "Chinese Society of Metals",

number = "12",

}

TY - JOUR

T1 - Structural Modification of Al65Cu16.5Ti18.5 Amorphous Powder through Annealing and Post Milling

T2 - Improving Thermal Stability

AU - Tan, Zhen

AU - Wang, Lu

AU - Xue, Yunfei

AU - Cheng, Xingwang

AU - Zhang, Long

PY - 2016/12/1

Y1 - 2016/12/1

N2 - To improve thermal stability of the Al65Cu16.5Ti18.5 amorphous powder, structural modification of the amorphous powder was performed through annealing and post milling. Annealing above the crystallization temperature (Tx) not only induced nanoscale intermetallics to precipitate in the amorphous powder, but also increased Cu atomic percentage within the residual amorphous phase. Post milling induced the amorphization of the nanocrystal intermetallics and the formation of Cu9Al4 from the residual amorphous phase. Thus, a mixed structure consisting of amorphous phase and Cu9Al4 was obtained in the powder after annealing and post milling (the APMed powder). The phase constituent in the APMed powder did not change during the post annealing, which exhibited significantly improved thermal stability in comparison with the as-milled amorphous powder.

AB - To improve thermal stability of the Al65Cu16.5Ti18.5 amorphous powder, structural modification of the amorphous powder was performed through annealing and post milling. Annealing above the crystallization temperature (Tx) not only induced nanoscale intermetallics to precipitate in the amorphous powder, but also increased Cu atomic percentage within the residual amorphous phase. Post milling induced the amorphization of the nanocrystal intermetallics and the formation of Cu9Al4 from the residual amorphous phase. Thus, a mixed structure consisting of amorphous phase and Cu9Al4 was obtained in the powder after annealing and post milling (the APMed powder). The phase constituent in the APMed powder did not change during the post annealing, which exhibited significantly improved thermal stability in comparison with the as-milled amorphous powder.

KW - Amorphous powder

KW - Heat treatment

KW - Mechanical alloying

KW - Thermal stability

KW - Transmission electron microscopy

UR - http://www.scopus.com/inward/record.url?scp=84961844600&partnerID=8YFLogxK

U2 - 10.1016/j.jmst.2016.03.007

DO - 10.1016/j.jmst.2016.03.007

M3 - Article

AN - SCOPUS:84961844600

SN - 1005-0302

VL - 32

SP - 1326

EP - 1331

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

IS - 12

ER -

Structural Modification of Al₆₅Cu_16.5Ti_18.5 Amorphous Powder through Annealing and Post Milling: Improving Thermal Stability

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this