Effects of heat treatment and zirconium addition on grain boundary fracture of Al-5%Mg alloys with sodium

被引：0

作者：

Horikawa K. ^{[1
]}

Kumeuchi S. ^{[2
]}

Kitahata S. ^{[2
]}

Kobayashi H. ^{[1
]}

机构：

[1] Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University, 1-3, Machikaneyama, Toyonaka-shi, Osaka

[2] Graduate School of Engineering Science, Osaka University, Toyonaka-shi, Osaka

来源：

Keikinzoku/Journal of Japan Institute of Light Metals | 2020年 / 70卷 / 04期

关键词：

Al-Mg; Grain boundary fracture; Heat treatment; Segregation; Sodium; Zirconium;

D O I：

10.2464/jilm.70.136

中图分类号：

学科分类号：

摘要：

Effects of heat treatment and additional zirconium on grain boundary (GB) fracture of Al-5%Mg alloys containing sodium were investigated. As a result of the tensile test, room temperature ductility decreased as the amount of Na increased from 4 ppm to 200 ppm in the homogenized specimen. GB fracture was observed at room temperature when the alloy contained 200 ppm of sodium. On the other hand, the homogenized specimen containing 200 ppm of sodium did not show GB fracture even at 300 °C. High temperature embrittlement (HTE) was observed in the Al-Mg-4 ppm Na alloy with cold-swaging plus recrystallization heat treatment after the homogenization. HTE was partially suppressed by the addition of 0.2%Zr in an Al-Mg alloy with 3 ppm of Na, while not fully be suppressed by the addition of 0.1% Zr in an Al-Mg alloy with 2 ppm of Na. Furthermore, it was revealed that the HTE of the Al-Mg-0.1%Zr alloy with 2 ppm of Na was fully suppressed by the additional annealing at 450 °C for 5 h. It was presumed that Al3Zr precipitates is effective for the suppression of the HTE of Al-Mg alloys caused by sodium. © 2020 The Japan Institute of Light Metals

引用

页码：136 / 143

页数：7

共 50 条

[1] Suppression of high temperature embrittlement of Al-5%Mg alloys containing a trace of sodium caused by antimony addition
Ueda, K
Horikawa, K
Kanno, M
SCRIPTA MATERIALIA, 1997, 37 (08) : 1105 - 1110
[2] Heat effect of grain boundary wetting in Al–Mg alloys
O. A. Kogtenkova
S. G. Protasova
A. A. Mazilkin
B. B. Straumal
P. Zięba
T. Czeppe
B. Baretzky
Journal of Materials Science, 2012, 47 : 8367 - 8371
[3] The effects of Mg addition on the microstructure and mechanical properties of thixoformed Al-5%Si-Cu alloys
Salleh, M. S.
Omar, M. Z.
Syarif, J.
JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 621 : 121 - 130
[4] The effects of Mg addition on the microstructure and mechanical properties of thixoformed Al-5%Si-Cu alloys
Omar, M.Z., 1600, Elsevier Ltd (621):
[5] Suppression of grain boundary embrittlement of Al-5% Mg alloy by immersion in liquid indium
Horikawa, Keitaro
Kono, Wataru
Yamada, Hiroyuki
Kobayashi, Hidetoshi
SCRIPTA MATERIALIA, 2012, 67 (7-8) : 712 - 715
[6] Intergranular Fracture of Al-5%Mg Alloys Containing a High Amount of Sodium and Its Suppression by Bismuth or Indium Additions
Horikawa, Keitaro
Kitahata, Shintaro
Kumeuchi, Sairi
Kobayashi, Hidetoshi
MATERIALS TRANSACTIONS, 2020, 61 (08) : 1600 - 1606
[7] Grain refinement effects on the strain rate sensitivity and grain boundary sliding in partially solidified Al-5 wt%Mg alloy
Takai, R.
Kimura, S.
Kashiuchi, R.
Kotaki, H.
Yoshida, M.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2016, 667 : 417 - 425
[8] Heat effect of grain boundary wetting in Al-Mg alloys
Kogtenkova, O. A.
Protasova, S. G.
Mazilkin, A. A.
Straumal, B. B.
Zieba, P.
Czeppe, T.
Baretzky, B.
JOURNAL OF MATERIALS SCIENCE, 2012, 47 (24) : 8367 - 8371
[9] Changes in microstructures of Al-5, 10 mass%Mg binary alloys with aging treatment
Yamanashi Univ, Kofu, Japan
Nippon Kinzoku Gakkaishi, 1 (34-40):
[10] Changes in microstructures of Al-5, 10 mass%Mg binary alloys with aging treatment
Nakayama, Y
Takaai, T
Jin, DZ
Yamada, Y
JOURNAL OF THE JAPAN INSTITUTE OF METALS, 1997, 61 (01) : 34 - 40

← 1 2 3 4 5 →