通过数值模拟和热等静压实验,研究包套在铝合金粉末热等静压成形过程的屏蔽效应及其对性能的影响,建立包套对等静压力屏蔽效应的关系公式.结果表明:包套对等静压力的屏蔽效应与包套的几何尺寸、壁厚、屈服强度有关系,包套越厚,其屏蔽效应越显著,降低热等静压过程中粉末颗粒重排阶段的致密化程度.由于包套的屏蔽,对于二元共晶和三元共晶的液相没有实现完全挤出,在粉末颗粒与颗粒交界处残留有没有被液相填充完全的孔隙,降低粉末件最终的致密度.当包套厚度较大时,降低了粉末铝合金材料的抗拉强度和屈服强度,而对材料塑性的影响不明显.
参考文献
| [1] | Manabu Nakai;Takehiko Eto.New aspects of development of high strength aluminum alloys for aerospace applications[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20001/2(1/2):62-68. |
| [2] | Azim Gokce;Fehim Findik;Ali Osman Kurt.Microstructural examination and properties of premixed Al-Cu-Mg powder metallurgy alloy[J].Materials Characterization,20117(7):730-735. |
| [3] | C. Padmavathi;Anish Upadhyaya.Sintering Behaviour and Mechanical Properties of Al-Cu-Mg-Si-Sn Aluminum Alloy[J].Transactions of the Indian Institute of Metals,20114/5(4/5):345-357. |
| [4] | 陆恒;魏青松;薛鹏举;王基维;史玉升.Inconel 625粉末盘热等静压近净成形过程模拟与验证[J].中国机械工程,2013(19):2675-2680,2686. |
| [5] | Wu, Yan;Xue, Pengju;Wei, Qingsong;Huang, Jun;Shi, Yusheng;Liu, Jie.An Integrated Forming Process for Manufacturing Ti6Al4V Impeller with a Functional Coating Layer Using Hot Isostatic Pressing[J].Materials and Manufacturing Processes,20154/6(4/6):756-765. |
| [6] | 董平.包套对等静压压力的屏蔽效应分析[J].金属成形工艺,2002(3):12-14,26. |
| [7] | 徐磊;邬军;刘羽寅;雷家峰;杨锐.Ti-5Al-2.5Sn合金粉末热等静压压坯的致密化行为及性能[J].钛工业进展,2011(4):19-23. |
| [8] | 程文祥 .Ti--5Al--2.5Sn ELI预合金粉末热等静压致密化行为与有限元模拟研究[D].中国科学院大学,2013. |
| [9] | 郎利辉;布国亮;薛勇;张东星.钛合金热等静压模拟本构关键参数确定及工艺优化[J].塑性工程学报,2011(4):34-38. |
| [10] | 姚松;郎利辉;布国亮;张东星;王刚.基于Ti-6Al-4V的热等静压与温压成形数值模拟对比研究[J].锻压技术,2013(3):156-160. |
| [11] | 肖志瑜;陈维平;温利平;李元元.温压动态压制曲线及颗粒重排贡献率的探讨[J].粉末冶金材料科学与工程,2005(2):96-99. |
| [12] | Jong Cheol Kim;David M.Martin;Chang Sung Lim.Effect of rearrangement on simulated particle packing[J].Powder Technology,20023(3):211-216. |
| [13] | 郎利辉;王刚;布国亮;姚松;续秋玉.热等静压工艺参数对2A12粉末铝合金性能的影响研究[J].粉末冶金工业,2014(5):19-23. |
| [14] | Pai BC.;Pillai RM.;Satyanarayana KG.;Ramani G..ROLE OF MAGNESIUM IN CAST ALUMINIUM ALLOY MATRIX COMPOSITES [Review][J].Journal of Materials Science,19958(8):1903-1911. |
| [15] | G.B. Schaffer;B.J. Hall;S.J. Bonner.The effect of the atmosphere and the role of pore filling on the sintering of aluminium[J].Acta materialia,20061(1):131-138. |
| [16] | Arribas, I.;Martín, J.M.;Castro, F..The initial stage of liquid phase sintering for an Al-14Si-2.5Cu-0.5Mg (wt%) P/M alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,201016/17(16/17):3949-3966. |
| [17] | Yunzhong Liu;Xia Luo;Zhilong Li.Microstructure evolution during semi-solid powder rolling and post-treatment of 7050 aluminum alloy strips[J].Journal of Materials Processing Technology,20142(2):165-174. |
| [18] | Yufeng Wu;Gap-Yong Kim.Compaction behavior of Al6061 powder in the semi-solid state[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,20112(2):252-258. |
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%