根据合金成分设计,在Mg-5Sn铸造合金中逐步添加2％Al及4％Zn(质量分数),实验结果表明,单独添加Al后,一次枝晶尺寸减小,且二次臂变的更加细密,合金的延伸率从6.6％提高到22.4％; Al和Zn复合添加后,长程枝晶转变为较为圆整的蔷薇状,在合金中生成了Mg32 (Al,Zn)49相,合金的屈服强度和抗拉强度分别达到96和232 MPa,但延伸率则下降到14.8％.通过固溶时效处理,Mg-5Sn-4Zn-2Al合金在175℃时效24 h后达到硬度峰值83.5 HV,其晶内析出相由沿[0001]晶向分布的MgZn2和块状的Mg2Sn相组成,对应的室温屈服和抗拉强度分别提升到144和264 MPa;在150℃下其屈服强度仍可达到138 MPa,这表明合金的晶内析出的MgZn2和Mg2Sn相在高温下仍具有良好的强化作用.
参考文献
| [1] | Liu H M,Chen Y G,Tang Y B,Wei S H,Niu G.J Alloys Compd,2007; 440:122 |
| [2] | Nayyeri G,Mahmudi R.Mater Sci Eng,2010; A527:4613 |
| [3] | Poddara P,Sahooa K L,Mukherjeeb S,Raya A K.Mater Sci Eng,2012; A545:103 |
| [4] | Cheng W L,Park S S,You B S,Koo B H.Mater Sci Eng,2012; A527:4650 |
| [5] | Park S S,Tang W N,You B S.Mater Lett,2010; 64:31 |
| [6] | Sasaki T T,Yamamoto K,Honma T,Kamadob S,Honoa K.Scr Mater,2008; 59:1111 |
| [7] | C'aceres C H,Rovera D M.J Light Met,2001; 1:151 |
| [8] | Blake A H,C'aceres C H.Mater Sci Eng,2008; A483-484:161 |
| [9] | Shi B Q,Chen R S,Ke W.J Alloys Compd,2011; 509:3357 |
| [10] | Liu H M,Chen Y G,Zhao H F,Wei S H,Gao W.J Alloys Compd,2010; 504:345 |
| [11] | Liu H M,Chen Y G,Tang Y B,Huang D M,Niu G.Mater Sci Eng,2006; A437:348 |
| [12] | Yang M B,Pan F S.Mater Sci Eng,2009; A525:112 |
| [13] | Yang M B,Pan F S,Cheng L,Shen J.Mater Sci Eng,2009; A512:132 |
| [14] | Kim B H,Lee S W,Park Y H,Park I M.J Alloys Compd,2010; 493:502 |
| [15] | Lee S G,Jeon J J,Park K C,Park Y H,Park I M.Mater Chem Phys,2011; 128:208 |
| [16] | Kang D H,Park S S,Kim N J.Mater Sci Eng,2005;A413-414:555 |
| [17] | Park S S,You B S.Scr Mater,2011; 65:202 |
| [18] | Son H T,Lee J B,Jeong H G,Konno T J.Mater Lett,2011; 65:1966 |
| [19] | Lim H K,Kim D H,Lee J Y,Kim W T,Kim D H.J Alloys Compd,2009; 468:308 |
| [20] | Emley E F.Principles of Magnesium Technology.London:Pergamon Press,1966:969 |
| [21] | Chen J H,Chen Z H,Yan H G,Zhang F Q,Liao K.J Alloys Compd,2008; 461:209 |
| [22] | Harosh S,Miller L,Levi G,Bamberger M.J Mater Sci,2007; 42:9983 |
| [23] | Mendis C L,Bettles C J,Gibson M A,Hutchinson C R.Mater Sci Eng,2006; A435-436:163 |
| [24] | Sasaki T T,Oh-ishi K,Ohkubo T,Hono K.Scr Mater,2006; 55:251 |
| [25] | Sasaki T T,Oh-ishi K,Ohkubo T,Hono K.Mater Sci Eng,2011; A530:1 |
| [26] | Lee Y C,Dahle A K,Stjohn D H.Metall Mater Trans,2000; 31A:2895 |
| [27] | Fu J W,Yang Y S.J Cryst Growth,2011; 322:84 |
| [28] | Hu H Q.Principal of Metal Solidification.Beijing:China Machine Press,2008:117 (胡汉起.金属凝固原理.北京:机械工业出版社,2008:117) |
| [29] | Tang W N,Park S S,You B S.Mater Design,2011; 32:3537 |
| [30] | Nave M D,Dahle A K,Stjohn D H.In:Kaplan H I,Hryn J,Clow Beds.,Magnesium Technology 2000.Tennessee:The Minerals,Metals & Materials Society,2000:233 |
| [31] | Lu Y Z,Wang Q D,Ding W J,Zeng X Q,Zhu Y P.Mater Lett,2000; 44:265 |
| [32] | Nie J F.Scr Mater,2003; 48:1009 |
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%