Grain structure and precipitates in squeeze casting Al-Li-Mg-Zr alloy

被引：1

作者：

Fan, Li ^{[1
]}

Chen, Zhongwei ^{[1
]}

Hao, Qitang ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

来源：

ADVANCES IN MATERIALS AND MATERIALS PROCESSING IV, PTS 1 AND 2 | 2014年 / 887-888卷

关键词：

Squeeze casting; Al-Li alloy; Grain structure; Precipitate; TENSILE PROPERTIES; MICROSTRUCTURE;

D O I：

10.4028/www.scientific.net/AMR.887-888.329

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Grain structure and precipitates in squeeze casting Al-Li-Mg-Zr alloy for aircraft industry were investigated in heat treated condition, using X-ray diffraction, optical microscopy and transmission electron microscopy. An ultra fine grained structure in sub-micrometer size was obtained, having fine nanograins in it with polycrystalline diffraction rings that are different from the single-crystal patterns in the matrix. Ultra fine grain areas are generally located on the grain boundaries and sub-grain boundaries. In addition, TEM observations indicates the presence of lenticular delta' (Al3Li) phases that symmetrical distributed around the GP zones. The alloy also contains spherical beta' (Al3Zr) dispersoids, and S-1 (Al2MgLi) phases.

引用

页码：329 / 332

页数：4

共 50 条

[1] Laser welding of Al-Li-Mg-Zr alloy
Twardowska, A
Kusinski, J
LASER TECHNOLOGY VI: APPLICATIONS, 2000, 4238 : 180 - 185
[2] EXTRUSION PROCESSING OF AL-LI-MG-ZR ALLOY
PARSON, NC
SHEPPARD, T
MATERIALS SCIENCE AND TECHNOLOGY, 1988, 4 (09) : 816 - 823
[3] Influence of low additions of copper on properties of Al-Li-Mg-Zr alloy
Kumar, S., 1600, Maney Publishing (09):
[4] EFFECT OF EXTRUSION PARAMETERS ON THE MICROSTRUCTURE AND PROPERTIES OF AN AL-LI-MG-ZR ALLOY
KUMAR, S
MCSHANE, HB
SHEPPARD, T
JOURNAL OF MATERIALS SCIENCE, 1994, 29 (04) : 1067 - 1074
[5] THE EFFECTS OF AGING ON THE PROPERTIES OF A RAPIDLY SOLIDIFIED AL-LI-MG-ZR ALLOY
YU, GF
ZHANG, SQ
FENG, YS
CHAI, SC
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 133 : 274 - 278
[6] THERMOMECHANICAL PROCESSING OF A RAPIDLY SOLIDIFIED AL-LI-MG-ZR ALLOY POWDER
ABELN, S
ABBASCHIAN, GJ
JOURNAL OF METALS, 1984, 36 (12): : 38 - 38
[7] INFLUENCE OF LOW ADDITIONS OF COPPER ON PROPERTIES OF AL-LI-MG-ZR ALLOY
KUMAR, S
MCSHANE, HB
SHEPPARD, T
MATERIALS SCIENCE AND TECHNOLOGY, 1993, 9 (12) : 1101 - 1105
[8] STUDYING STATISTICAL RULES FOR CHANGE OF ALLOY PROPERTIES OF AL-LI-MG-ZR SYSTEM IN RELATION TO LI AND MG CONTENTS
FRIDLYAN.IN
DOLZHANS.YM
KOSTYUNI.VI
SIBILEVA, LI
SANDLER, VI
TYURIN, BV
ZAVODSKAYA LABORATORIYA, 1974, 40 (07): : 845 - 848
[9] Texture and grain structure of Al-Li-Mg-Zr-Sc alloy sheets
Fridlyander, JN
Kolobnev, NI
Khokhlatova, LB
Berezina, AL
Katko, AV
Haszler, A
Keidel, C
ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3, 2000, 331-3 : 867 - 870
[10] Texture and grain structure of Al-Li-Mg-Zr-Sc alloy sheets
Fridlyander, J.N.
Kolobnev, N.I.
Khokhlatova, L.B.
Berezina, A.L.
Katko, A.V.
Haszler, A.
Keidel, C.
Materials Science Forum, 2000, 331

← 1 2 3 4 5 →