Microstructure and Tensile Properties of ZK60 Alloy Fabricated by Simplified Rapid Solidification Powder Metallurgy (S-RS P/M) Process

材料科学技术（英文）, 2010, 26(2): 151-155.

^1, , ^2, , ^3, , ^4, , ^5,

1.Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan 250061,China

2.Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan 250061,China

3.Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan 250061,China

4.Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan 250061,China

5.Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan 250061,China

Microstructure and Tensile Properties of ZK60 Alloy Fabricated by Simplified Rapid Solidification Powder Metallurgy (S-RS P/M) Process

Zhenya Zhang ^1, , Huashun Yu ^2, , Shaoqing Wang ^3, , Haitao Wang ^4, , Guanghui Min ^5,

1.Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan 250061,China

2.Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan 250061,China

3.Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan 250061,China

4.Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan 250061,China

5.Key Laboratory of Liquid Structure and Heredity of Materials,Ministry of Education,Shandong University,Jinan 250061,China

Keywords： Microstructure

This study investigated the microstructures and mechanical properties of ZK60 alloy prepared by a simplified rapid solidification powder metallurgy (RS P/M) processing system (S-RS P/M), which consists of warm press in dry air and hot extrusion. Microstructure characterizations showed that S-RS P/M alloy consisted of magnesium matrix and oxide stringers of ～1 μm in width. TEM (transmission electron microscopy) observations illustrated nano-size magnesia particles (10-30 nm) constituted oxide stringer in detail. Due to a relatively higher volume of nano-size magnesia particle produced during S-RS P/M process, 0.2% yield strength of S-RS P/M ZK60 alloy was found to be as high as 382 MPa, which is 10% higher than that of RS P/M alloy. The improvement in mechanical properties is mainly attributed to the combination effects of Orowan mechanism and coefficient of thermal expansion (CTE) mismatch because of the approximately same average grain size.

参考文献

[1]	X. F. Guo;D. Shechtman .Reciprocating extrusion of rapidly solidified Mg-6Zn-1Y-0.6Ce-0.6Zr alloy[J].Journal of Materials Processing Technology,2007(0):640-644.
[2]	M. Nishida;Y. Kawamura;T. Yamamuro .Formation process of unique microstructure in rapidly solidified Mg_(97)Zn_1Y_2 alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(0):1217-1223.
[3]	T.S. Srivatsan;Satish Vasudevan;M. Petraroli .The tensile deformation and fracture behavior of a magnesium alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):154-159.
[4]	K. Nakashima;H. Iwasaki;T. Mori;M. Mabuchi;M. Nakamura;T. Asahina .Mechanical properties of a powder metallurgically processed Mg-5Y-6Re alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):15-18.
[5]	B. Q. Han;D. C. Dunand .Microstructure and mechanical properties of magnesium containing high volume fractions of yttria dispersoids[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):297-304.
[6]	W.L.E. Wong;M. Gupta .Development of Mg/Cu nanocomposites using microwave assisted rapid sintering[J].Composites science and technology,2007(7/8):1541-1552.

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材料期刊网

Microstructure and Tensile Properties of ZK60 Alloy Fabricated by Simplified Rapid Solidification Powder Metallurgy (S-RS P/M) Process

参考文献