研究了不同铁相对铝硅合金高温拉伸性能及其断面显微组织、形貌的影响.结果表明:当合金中铁相形貌呈针状时,合金高温拉伸强度较好,但塑性较差；当合金中铁相形貌呈鱼骨状时,合金高温拉伸强度低于前者,但塑性较好.通过断面显微组织及断口形貌分析可知,含鱼骨状铁相的试样断口为典型塑性断裂特征,而含针状铁相的试样断口为典型脆性断裂特征.裂纹扩展均为沿晶断裂方式.
参考文献
| [1] | L. Siaminwe;A. J. Clegg .Effect of processing variables on structure and tensile properties of investment cast Al-Si-Mg casting alloy[J].Materials Science and Technology: MST: A publication of the Institute of Metals,1999(7):812-820. |
| [2] | QIAN Zhao;LIU Xiang-fa;ZHAO De-gang et al.Effects of trace Mn addition on the elevated temperature tensile strength and microstructure of a lowiron Al-Si alloy[J].Materials Letters,2008,62(14):2146-2149. |
| [3] | Dinnis C M;Taylor J A;Dahl A K .Interaction between iron,manganese and the Al-Si eutectic in hypoeutectic Al-Si alloys[J].Metallurgical and Materials Tranactions A,2006,37(11):263-283. |
| [4] | 郭学锋,杨文朋,宋佩维.往复挤压Mg-Al-Si合金的高温拉伸性能[J].材料热处理学报,2012(02):7-11. |
| [5] | S. Belmares-Perales;M. Castro-Roman;M. Herrera-Trejo .Effect of Cooling Rate and Fe/Mn Weight Ratio on Volume Fractions of a-AlFeSi and P-AlFeSi Phases in Al-7.3Si-3.5Cq Alloy[J].METALS AND MATERIALS International,2008(3):307-314. |
| [6] | M.V. Kral .A crystallographic identification of intermetallic phases in Al-Si alloys[J].Materials Letters,2005(18):2271-2276. |
| [7] | Creapeau P N .Effect of iron in Al-Si casting alloys:A critical review[J].AFS Transactions,1995,110(103):361-366. |
| [8] | Hwang J Y;Doty H W;Kaufman M J .The effect of Mn additions on the microstructure and mechanical properties of Al-Si-Cu casting alloys[J].Materials Science and Engineering A,2008,488(1-2):496-504. |
| [9] | Elsebaie, O.;Samuel, A.M.;Samuel, F.H. .Effects of Sr-modification, iron-based intermetallics and aging treatment on the impact toughness of 356 Al-Si-Mg alloy[J].Journal of Materials Science,2011(9):3027-3045. |
| [10] | Maitra T;Gupta S P .Intermetallic compound formation in Fe-Al-Si ternary system:Part Ⅱ[J].Materials Characterization,2003,49(04):293-311. |
| [11] | <铸造有色合金及其熔炼>联合编写组.铸造有色金属及其熔炼[M].北京:国防工业出版社,1980:13-20. |
| [12] | Ravi M;Pillai U T S;Pai B C .The effect of mischmetal addition on structure and mechanical properties of a cast Al-7 Si 0.3 Mg alloy containing excess iron[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2001,33(02):391-400. |
| [13] | Kumari Sreeja S S;Pillai M P;Rajan T P D et al.Effects of individual and combined additions of Be,Mn,Ca and Sr on the solidification behavior,structure and mechanical properties of Al-7Si-0.3Mg-0.8Fe alloy[J].Materials Science and Engineering A,2007,460:561-573. |
| [14] | 杨江波.改善铝硅合金中铁相形态的措施[J].铸造,2000(08):454. |
| [15] | Cameron M. Dinnis;John A. Taylor;Arne K. Dahle .Iron-related porosity in Al-Si-(Cu) foundry alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):286-296. |
| [16] | S. Tahamtan;A. Fadavi Boostani;H. Nazemi .Mechanical properties and fracture behavior of thixoformed, rheocast and gravity-cast A356 alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):107-114. |
| [17] | 宋有明,陈国宏,余新海,刘俊建,王家庆,化建,张涛,张建华,汤文明.T92/HR3C异种钢焊接接头高温拉伸变形及断裂行为[J].材料热处理学报,2012(02):72-78. |
| [18] | M.X. Guo;M.P. Wang;K. Shen .Tensile fracture behavior characterization of dispersion strengthened copper alloys[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):488-498. |
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