| 引用本文: | 陈正周,毛卫民.蛇形通道制备半固态浆料均热后的流变压铸[J].材料科学与工艺,2012,20(2):70-74.DOI:10.11951/j.issn.1005-0299.20120213. |
| CHEN Zheng-zhou,MAO Wei-min.Rheo-diecasting performance of the semi-solid slurry prepared by serpentine channel pouring and after soaked[J].Materials Science and Technology,2012,20(2):70-74.DOI:10.11951/j.issn.1005-0299.20120213. |
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| 摘要: |
| 为了研究蛇形通道制备半固态浆料并经过均热后的流变压铸性能,以A356铝合金为材料进行实验研究.结果表明:当浇注温度为680 ℃、均热功率为1.6～2.5 kW时,半固态浆料的微观组织可以达到均一,而且初生α(Al)的形貌更加圆整；该浆料经过流变压铸成形后,在铸态下拉伸试样的抗拉强度可达245～260 MPa,伸长率可达8.5%～13%；经过T6热处理后,拉伸试样的抗拉强度可达295～320 MPa,伸长率可达7%～11%.均热可以对浆料的整个温度进行调整来满足不同铸件的流变压铸. |
| 关键词: 半固态 A356铝合金 蛇形通道 力学性能 微观组织 |
| DOI：10.11951/j.issn.1005-0299.20120213 |
| 分类号:TG249.9；TG146.2 |
| 基金项目:国家高新技术研究发展计划资助项目(2006AA03Z115);国家基础研究发展计划资助项目(2011CB6056302-1);国家自然科学基金资助项目(50774007). |
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| Rheo-diecasting performance of the semi-solid slurry prepared by serpentine channel pouring and after soaked |
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CHEN Zheng-zhou1,2, MAO Wei-min1
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1.School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China, E-mail:chzz19710425@12;2.Zhejiang Province Cixi City Huili Machinery and Electric Co.Ltd.,Cixi 315333,China
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| Abstract: |
| To study rheo-diecasting performance of the semi-solid slurry prepared by serpentine channel pouring and after soaked,the A356 aluminum alloy was used.The results show that,under the conditions of pouring temperature of 680 ℃ and soaking power of 1.6~2.5 kW,uniform microstructure can be achieved,and primary α(Al) morphology become rounder.After rheo-diecasting,ultimate tensile strength of the tensile test samples can reach 245~260 MPa,elongation can reach 8.5%~13%.After T6 heat treatment,the ultimate tensile strength can be enhanced to 295~320 MPa,and the elongation to 7%~11%.The temperature of the whole soaked slurry can be adjusted to meet different castings for rheo-diecasting. |
| Key words: semi-solid A356 aluminum alloy serpentine channel mechanical properties microstructure |
