Mg-5Y-3Sm-0.8Ca-0.5Sb合金的高温蠕变行为
|
摘要
采用蠕变实验和理论计算,研究了时效态Mg-5Y-3Sm-0. 8Ca-0. 5Sb合金在250～300℃和50～70 Pa条件下的蠕变行为。结果表明,该合金具有良好的抗高温蠕变性能,其在300℃和70 MPa下的稳态蠕变速率为3. 28×10-8s-1。在50～70 MPa的应力下,当温度由250℃升到300℃时,应力指数由2. 30变为3. 22;在250～300℃的温度下,当应力由50 MPa升到70 MPa时,蠕变激活能由65. 4 kJ/mol变为81. 0 kJ/mol。
The creep behavior of aged Mg-5 Y-3 Sm-0.8 Ca-0.5 Sb alloy at 250-300 ℃ and 50-70 MPa was investigated by creep tests and theoretic calculation.The results show that the alloy has good high temperature creep resistance and the steady-state creep rate of 3.28 × 10-8 s-1 is obtained at 300 ℃ and 70 MPa.At 50-70 MPa,with the increase of temperature rises from 250 ℃ to 300 ℃,the stress index changes from 2.30 to 3.22.At 250-300 ℃,with the increase of stress rises from 50 MPa to 70 MPa,the creep activation energy is changed from 65.4 k J/mol to 81.0 k J/mol.
The creep behavior of aged Mg-5 Y-3 Sm-0.8 Ca-0.5 Sb alloy at 250-300 ℃ and 50-70 MPa was investigated by creep tests and theoretic calculation.The results show that the alloy has good high temperature creep resistance and the steady-state creep rate of 3.28 × 10-8 s-1 is obtained at 300 ℃ and 70 MPa.At 50-70 MPa,with the increase of temperature rises from 250 ℃ to 300 ℃,the stress index changes from 2.30 to 3.22.At 250-300 ℃,with the increase of stress rises from 50 MPa to 70 MPa,the creep activation energy is changed from 65.4 k J/mol to 81.0 k J/mol.
引文
[1]张新明,彭卓凯,陈健美,等.耐热镁合金及其研究进展[J].中国有色金属学报,2004,14(9):1443-1450.ZHANG Xinming,PENG Zhuokai,CHEN Jianmei,et al.Heat-resistant magnesium alloys and their development[J].The Chinese Journal of Nonferrous Metals,2004,14(9):1443-1450.
[2]闫蕴琪,张廷杰,邓炬,等.耐热镁合金的研究现状与发展方向[J].稀有金属材料与工程,2004,33(6):561-565.YAN Yunqi,ZHANG Tingjie,DENG Ju,et al. Research and development of heat resistant Mg alloys[J]. Rare Metal Materials and Engineering,2004,33(6):561-565.
[3]王目孔,孙建新,刘新超.铸造镁合金研究与应用进展[J].有色金属工程,2012,2(2):56-59.WANG Mukong,SUN Jianxin,LIU Xinchao. Progress in research and application of cast magnesium alloys[J].Nonferrous Metals Engineering,2012,2(2):56-59.
[4]赵怿,董刚,赵博.镁合金在航空领域应用的研究进展[J].有色金属工程,2015,5(2):23-27,43.ZHAO Yi,DONG Gang,ZHAO Bo. Research progress in the application of magnesium alloys in aeronautical field[J]. Nonferrous Metals Engineering,2015,5(2):23-27,43.
[5]陈振华.耐热镁合金[M].北京:化学工业出版社,2007.CHEN Zhenhua. Heat resistant magnesium alloy[M].Beijing:Chemical Industry Press,2007.
[6]丁文江.镁合金科学与技术[M].北京:科学出版社,2007.DING Wenjiang. Magnesium alloy science and technology[M]. Beijing:Science Press,2007.
[7]付三玲,李全安,井晓天,等. Mg-12Gd-2Y-0. 5Zr合金的高温蠕变行为[J].特种铸造及有色合金,2013,33(12):1090-1093.FU Sanling,LI Quan'an,JING Xiaotian,et al. Creep behavior of Mg-12Gd-2Y-0. 5Zr alloy at high temperature[J]. Special Casting&Nonferrous Alloys, 2013,33(12):1090-1093.
[8]付三玲,李全安,井晓天,等. Mg-12Gd-2Y-2Sm-0. 5Zr镁合金高温蠕变行为研究[J].兵器材料科学与工程,2014,37(3):5-7.FU Sanling,LI Quan'an,JING Xiaotian,et al. Study on creep behavior of Mg-12Gd-2Y-2Sm-0. 5Zr alloy at high temperature[J]. Ordnance Material Science and Engineering,2014,37(3):5-7.
[9]张清,李全安,井晓天,等. Mg-10Y-1. 5Sm合金的组织和力学性能[J].材料热处理学报,2011,32(1):24-27.ZHANG Qing, LI Quan'an, JING Xiaotian, et al.Microstructure and mechanical properties of Mg-10Y-1. 5Sm alloy[J]. Transactions of Materials and Heat Treatment,2011,32(1):24-27.
[10] Zhang Q,Li Q A,Jing X T,et al. Microstructure and mechanical properties of Mg-10Y-2. 5Sm alloy[J].Journal of Rare Earths, 2010, 28(Spec. Issue):375-377.
[11]张清,李全安,陈君,等. Mg-5Y-3Sm-0. 8Ca-0. 5Sb合金的组织和力学性能[J].稀土,2015,36(5):97-101.ZHANG Qing, LI Quan'an, CHEN Jun, et al.Microstructure and mechanical properties of Mg-5Y-3Sm-0. 8Ca-0. 5Sb alloy[J]. Chinese Rare Earths,2015,36(5):97-101.
[12]张清,李全安,陈君,等. Mg-5Y-3Sm-0. 8Ca-0. 5Sb合金的蠕变行为[J].稀有金属与硬质合金,2014,42(4):52-54.ZHANG Qing,LI Quan'an,CHEN Jun,et al. Creep behavior of Mg-5Y-3Sm-0. 8Ca-0. 5Sb alloy[J]. Rare Metals and Cemented Carbides,2014,42(4):52-54.
[13] Mordike B L. Development of highly creep resistant magnesium alloys[J]. Journal of Materials Processing Technology,2001,117(3):391-394.
[14] Luo A A. Recent magnesium alloy development for elevated temperature applications[J]. International Materials Reviews,2004,49(1):13-30.
[2]闫蕴琪,张廷杰,邓炬,等.耐热镁合金的研究现状与发展方向[J].稀有金属材料与工程,2004,33(6):561-565.YAN Yunqi,ZHANG Tingjie,DENG Ju,et al. Research and development of heat resistant Mg alloys[J]. Rare Metal Materials and Engineering,2004,33(6):561-565.
[3]王目孔,孙建新,刘新超.铸造镁合金研究与应用进展[J].有色金属工程,2012,2(2):56-59.WANG Mukong,SUN Jianxin,LIU Xinchao. Progress in research and application of cast magnesium alloys[J].Nonferrous Metals Engineering,2012,2(2):56-59.
[4]赵怿,董刚,赵博.镁合金在航空领域应用的研究进展[J].有色金属工程,2015,5(2):23-27,43.ZHAO Yi,DONG Gang,ZHAO Bo. Research progress in the application of magnesium alloys in aeronautical field[J]. Nonferrous Metals Engineering,2015,5(2):23-27,43.
[5]陈振华.耐热镁合金[M].北京:化学工业出版社,2007.CHEN Zhenhua. Heat resistant magnesium alloy[M].Beijing:Chemical Industry Press,2007.
[6]丁文江.镁合金科学与技术[M].北京:科学出版社,2007.DING Wenjiang. Magnesium alloy science and technology[M]. Beijing:Science Press,2007.
[7]付三玲,李全安,井晓天,等. Mg-12Gd-2Y-0. 5Zr合金的高温蠕变行为[J].特种铸造及有色合金,2013,33(12):1090-1093.FU Sanling,LI Quan'an,JING Xiaotian,et al. Creep behavior of Mg-12Gd-2Y-0. 5Zr alloy at high temperature[J]. Special Casting&Nonferrous Alloys, 2013,33(12):1090-1093.
[8]付三玲,李全安,井晓天,等. Mg-12Gd-2Y-2Sm-0. 5Zr镁合金高温蠕变行为研究[J].兵器材料科学与工程,2014,37(3):5-7.FU Sanling,LI Quan'an,JING Xiaotian,et al. Study on creep behavior of Mg-12Gd-2Y-2Sm-0. 5Zr alloy at high temperature[J]. Ordnance Material Science and Engineering,2014,37(3):5-7.
[9]张清,李全安,井晓天,等. Mg-10Y-1. 5Sm合金的组织和力学性能[J].材料热处理学报,2011,32(1):24-27.ZHANG Qing, LI Quan'an, JING Xiaotian, et al.Microstructure and mechanical properties of Mg-10Y-1. 5Sm alloy[J]. Transactions of Materials and Heat Treatment,2011,32(1):24-27.
[10] Zhang Q,Li Q A,Jing X T,et al. Microstructure and mechanical properties of Mg-10Y-2. 5Sm alloy[J].Journal of Rare Earths, 2010, 28(Spec. Issue):375-377.
[11]张清,李全安,陈君,等. Mg-5Y-3Sm-0. 8Ca-0. 5Sb合金的组织和力学性能[J].稀土,2015,36(5):97-101.ZHANG Qing, LI Quan'an, CHEN Jun, et al.Microstructure and mechanical properties of Mg-5Y-3Sm-0. 8Ca-0. 5Sb alloy[J]. Chinese Rare Earths,2015,36(5):97-101.
[12]张清,李全安,陈君,等. Mg-5Y-3Sm-0. 8Ca-0. 5Sb合金的蠕变行为[J].稀有金属与硬质合金,2014,42(4):52-54.ZHANG Qing,LI Quan'an,CHEN Jun,et al. Creep behavior of Mg-5Y-3Sm-0. 8Ca-0. 5Sb alloy[J]. Rare Metals and Cemented Carbides,2014,42(4):52-54.
[13] Mordike B L. Development of highly creep resistant magnesium alloys[J]. Journal of Materials Processing Technology,2001,117(3):391-394.
[14] Luo A A. Recent magnesium alloy development for elevated temperature applications[J]. International Materials Reviews,2004,49(1):13-30.