Effects of Reheating Duration on the Microstructures and Tensile Properties of Thixoforged In Situ Mg2Sip/AM60B Composites

被引：12

作者：

Chen, Tijun ^{[1
]}

Zhang, Suqing ^{[1
]}

Chen, Yushi ^{[1
]}

Li, Yuandong ^{[1
]}

Ma, Ying ^{[1
]}

Hao, Yuan ^{[1
]}

机构：

[1] Lanzhou Univ Technol, Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2014年 / 27卷 / 05期

关键词：

In situ synthesis; Magnesium matrix composites; Semisolid; Mechanical properties; AZ91D MAGNESIUM ALLOY; SEMISOLID MICROSTRUCTURE; MECHANICAL-PROPERTIES; EVOLUTION; TEMPERATURE; PARTICLES; BEHAVIOR;

D O I：

10.1007/s40195-014-0159-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The influences of reheating duration on microstructures and tensile properties of thixoforged in situ Mg2Sip/ AM60B composites have been investigated. The results indicate that the reheating time affects the volume fraction, composition and distribution of the liquid phase, the evolution of the liquid pools within the primary particles, and the morphology and distribution of the Mg2Si particles of the semisolid feedstock. These changes then affect the subsequent solidification behavior and deformation mechanism during thixoforging, which are responsible for the resulting microstructure and tensile properties. Mg2Si particles play a strengthening role for the matrix through the load transfer mechanism. The appropriate reheating time is 60 min at 600 degrees C when the mold preheating temperature is at 300 degrees C. The ultimate tensile strength and elongation of the resulting composite are up to 209 MPa and 11.9%, respectively.

引用

页码：957 / 967

页数：11

共 30 条

[1] Semisolid processing of metallic materials [J].

Atkinson, H. V. .

MATERIALS SCIENCE AND TECHNOLOGY, 2010, 26 (12) :1401-1413

[2] Semi-solid deformation of non-dendritic structures .1. Phenomenological behavior [J].

Chen, CP ;

Tsao, CYA .

ACTA MATERIALIA, 1997, 45 (05) :1955-1968

[3]

Chen P.C., 2003, FUNDAMENTAL METAL FO, P77

[4] Microstructural evolution of previously deformed AZ91D magnesium alloy during partial remelting [J].

Chen, Qiang ;

Luo, Shoujing ;

Zhao, Zude .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 477 (1-2) :726-731

[5] Effects of reheating temperature and time on microstructure and tensile properties of thixoforged AZ63 magnesium alloy [J].

Chen, T. J. ;

Huang, L. K. ;

Huang, X. F. ;

Ma, Y. ;

Hao, Y. .

MATERIALS SCIENCE AND TECHNOLOGY, 2014, 30 (01) :96-108

[6] Effects of mould temperature and grain refiner amount on microstructure and tensile properties of thixoforged AZ63 magnesium alloy [J].

Chen, T. J. ;

Huang, L. K. ;

Huang, X. F. ;

Ma, Y. ;

Hao, Y. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 556 :167-177

[7] Semisolid microstructure of AM60B magnesium alloy refined by SiC particles [J].

Chen, T. J. ;

Lu, W. B. ;

Ma, Y. ;

Huang, H. J. ;

Hao, Y. .

INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2011, 102 (12) :1459-1467

[8] Microstructural evolution during partial remelting of in situ Sip/ZA27 composite with developed dendrites [J].

Chen, T. J. ;

Fu, M. F. ;

Li, Y. D. ;

Ma, Y. ;

Hao, Y. .

INTERNATIONAL JOURNAL OF CAST METALS RESEARCH, 2011, 24 (05) :299-306

[9] Effect of initial as-cast microstructure of AZ91D magnesium alloy on its semisolid microstructure [J].

Chen, T. J. ;

Jiang, X. D. ;

Ma, Y. ;

Li, Y. D. ;

Hao, Y. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 505 (02) :476-482

[10] Microstructural evolution and phase transformations during partial remelting of AZ91D magnesium alloy refined by SiC [J].

Chen, T. J. ;

Jiang, X. D. ;

Ma, Y. ;

Li, Y. D. ;

Hao, Y. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 497 (1-2) :147-154

← 1 2 3 →