Microstructure and properties of supersaturated ZA27 alloy during natural ageing |
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Authors: | Wang Hong Min Chen Quande Wu Yigui Zhang Yuangeng |
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Affiliation: | (1) Department of Materials Engineering, Luoyang Institute of Technology, 471039 Henan Province, People's Republic of China |
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Abstract: | The decomposition of the supersaturated solid solution of ZA27 alloy at room temperature has been investigated by X-ray diffraction, TEM and mechanical properties testing. Based on the results obtained, both continuous precipitation and cellular reaction occur during the decomposition process. The continuous precipitation follows the sequence: ![agr](/content/g267100244273x12/xxlarge945.gif)
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+ spherical GP zones
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+ elliptical GP zones
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+ R + . The cellular reaction can be written: + + . The properties of the alloy depend on the microstructure. After 1 month of ageing, a series of changes of microstructure have taken place. The properties of the alloy are: b=500 MPa, =13%,H
v=148. |
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Keywords: | |
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