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Microstructures and mechanical properties of high performance Mg–4Y–2.4Nd–0.2Zn–0.4Zr alloy
Highlights ► Adding 0.2wt.% Zn into Mg–4.0Y–2.4Nd–0.5Zr alloy. ► Zn could improve greatly the mechanical properties of Mg–4.0Y–2.4Nd–0.5Zr alloy. ► Strengthening mechanism of the peak-aged alloy was investigated.
Abstract The microstructures and mechanical properties of the high performance Mg–4Y–2.4Nd–0.2Zn–0.4Zr alloy were investigated. The results showed that the alloy was mainly composed of α-Mg, Mg24Y5 and Mg12Nd phases in the as-cast condition. After the solution treatment at 500°C for 6h and subsequent ageing at different temperatures, alloy exhibited the remarkable mechanical properties. The values of ultimate tensile strength, yield strength and elongation were 339MPa, 268MPa and 4.0% in 200°C peak-aged condition, and 330MPa, 265MPa and 6.5% in 225°C peak-aged condition, respectively. The high mechanical properties were mainly attributed to a high volume fraction of fine metastable precipitates in the matrix.
Microstructures and mechanical properties of high performance Mg–4Y–2.4Nd–0.2Zn–0.4Zr alloy
Highlights ► Adding 0.2wt.% Zn into Mg–4.0Y–2.4Nd–0.5Zr alloy. ► Zn could improve greatly the mechanical properties of Mg–4.0Y–2.4Nd–0.5Zr alloy. ► Strengthening mechanism of the peak-aged alloy was investigated.
Abstract The microstructures and mechanical properties of the high performance Mg–4Y–2.4Nd–0.2Zn–0.4Zr alloy were investigated. The results showed that the alloy was mainly composed of α-Mg, Mg24Y5 and Mg12Nd phases in the as-cast condition. After the solution treatment at 500°C for 6h and subsequent ageing at different temperatures, alloy exhibited the remarkable mechanical properties. The values of ultimate tensile strength, yield strength and elongation were 339MPa, 268MPa and 4.0% in 200°C peak-aged condition, and 330MPa, 265MPa and 6.5% in 225°C peak-aged condition, respectively. The high mechanical properties were mainly attributed to a high volume fraction of fine metastable precipitates in the matrix.
Microstructures and mechanical properties of high performance Mg–4Y–2.4Nd–0.2Zn–0.4Zr alloy
Su, Zaijun (author) / Liu, Chuming (author) / Wan, Yingchun (author)
2012-07-11
7 pages
Article (Journal)
Electronic Resource
English
Microstructures and mechanical properties of high performance Mg-4Y-2.4Nd-0.2Zn-0.4Zr alloy
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