研究高低温循环热处理对EW94合金挤压-T6态板材组织与力学性能的影响.结果表明:在(-196℃,12h)+(RT,12 h)制度下,循环热处理对合金的力学性能无明显影响;经(-196℃,12 h)4(≤200℃,12 h)循环热处理N(N≤15)次后,样品抗拉强度有所提高;经(-196℃,12 h)+(200℃,12 h)循环4次后,样品抗拉强度达到峰值,为413 MPa;经(-196℃,12 h)+(250℃,12 h)循环处理后,样品抗拉强度略有下降,伸长率略有提高;而经(-196℃,12 h)+(300℃,12 h)循环处理后,样品抗拉强度,急剧下降至307 MPa,但伸长率由2.8%提高到5.6%;随循环次数的增加,合金力学性能基本保持稳定.合金在高低温循环过程中的相变是影响其力学性能的主要因素.
参考文献
| [1] | 肖阳,张新明,陈健美,蒋浩.Mg-15Gd-0.6Zr合金的组织与力学性能[J].中国有色金属学报,2006(11):1888-1894. |
| [2] | 肖阳,张新明,陈健美,蒋浩,邓桢桢.高强耐热Mg-9Gd-4Y-0.6Zr合金的性能[J].中南大学学报（自然科学版）,2006(05):850-855. |
| [3] | ROKHLIN L L.Magnesium alloys containing rare earth metals:structure and properties[M].London:Taylor & Francis Eds,2003:1-2. |
| [4] | FRIEDRICH H E;MORDIKE B L.Magnesium technology:metallurgy,design data,applications[M].Beilin:Springer-Verlag,2006:20-28. |
| [5] | S.M. He;X.Q. Zeng;L.M. Peng .Microstructure and strengthening mechanism of high strength Mg-10Gd-2Y-0.5Zr alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2007(1/2):316-323. |
| [6] | J. F. Nie and B. C. Muddle .CHARACTERISATION OF STRENGTHENING PRECIPITATE PHASES IN A Mg-Y-Nd ALLOY[J].Acta materialia,2000(8):1691-1703. |
| [7] | J.F.Nie;B.C.Muddle .PRECIPITATION IN MAGNESIUM ALLOY WE54 DURING ISOTHERMAL AGEING AT 250℃[J].Scripta materialia,1999(10):1089-1094. |
| [8] | Z. Yang;J.P. Li;Y.C. Guo .Precipitation process and effect on mechanical properties of Mg-9Gd-3Y-0.6Zn-0.5Zr alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(0):274-280. |
| [9] | X. Gao;S.M. He;X.Q. Zeng;L.M. Peng;W.J. Ding;J.F. Nie .Microstructure evolution in a Mg-15Gd-0.5Zr (wt.%) alloy during isothermal aging at 250℃[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):322-327. |
| [10] | S.M. He;X.Q. Zeng;L.M. Peng .Precipitation in a Mg-10Gd-3Y-0.4Zr (wt. percent) alloy during isothermal ageing at 250 deg C[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2006(1/2):309-313. |
| [11] | G. Riontino;D. Lussana;M. Massazza .Structure evolution of EV31 Mg alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):200-206. |
| [12] | C. Antion;P. Donnadieu;F. Perrard;A. Deschamps;C. Tassin;A. Pisch .Hardening precipitation in a Mg-4Y-3RE alloy[J].Acta materialia,2003(18):5335-5348. |
| [13] | Riontino, G;Massazza, M;Lussana, D;Mengucci, P;Barucca, G;Ferragut, R .A novel thermal treatment on a Mg-4.2Y-2.3Nd-0.6Zr (WE43) alloy[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):445-448. |
| [14] | T. Honma;T. Ohkubo;K. Hono;S. Kamado .Chemistry of nanoscale precipitates in Mg-2.1Gd-0.6Y-0.2Zr (at.%) alloy investigated by the atom probe technique[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(1/2):301-306. |
| [15] | HONMA T;OHKUBO T;HONO K;KAMADO S .Corrigendum to "Chemistry of nanoscale precipitates in Mg-2.1Gd-0.6Y-0.2Zr(at.%) alloy investigated by the atom probe technique"[Mater Sci Eng A,395 (2005),301-306][J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2005,404(1/2):330-331. |
| [16] | 徐洲;赵连城.金属固态相变原理[M].北京:科学出版社,2004:13-14. |
| [17] | J.F. Nie .Effects of precipitate shape and orientation on dispersion strengthening in magnesium alloys[J].Scripta materialia,2003(8):1009-1015. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%