对单辊搅拌技术制得的A2017半固态材料小热变形后二次加热时的组织演化进行了研究.小热变形后的半固态材料加热到半固态区后可获得细小的球形组织;在加热过程中,由于位错能与界面能的存在以及溶质的扩散使合金发生块状化、再结晶、熔断球化3阶段变化;小变形促进该过程的进行;由于细小球形组织成形性能好,半固态轧材的断裂强度提高了75 MPa,延伸率提高了16%.
参考文献
| [1] | Flemming M C .Behavior of metal and alloys in the semisolid state[J].Metallurgical and Materials Transactions,1991,22:957-981. |
| [2] | MAO Wei-min,CUI Cheng-lin,ZHAO Ai-min,SUN Feng.Dynamical coarsening processes of microstructures in non-dendritic AlSi7Mg alloy remelted in semi-solid state[J].中国有色金属学会会刊,2000(01):25. |
| [3] | Nakada M;Shiohara Y;Flemmings M C .Semi-solid processing of copper alloys for electric motor component[J].ISIJ International,1990,30(01):27-33. |
| [4] | Kirkwood D H .Semisolid metal processing[J].International Materials Reviews,1994,39:173-189. |
| [5] | Vives C .Elaboration of semisolid alloys by means of new electromagnetic rheocasting process[J].Metallurgical and Materials Transactions,1992,21(04):189-206. |
| [6] | Chayong S;Kapranos P;Atkinson H V.Semi-solid processing of aluminium 7075[A].Turin,Italy,2000:649-654. |
| [7] | Hans J H .Semi-solid processing of alloys and composites[J].Foundry Management and Technology,1998,9:50. |
| [8] | Uhlmann D R;Seward m T P;Chalmers B .The effect of magnetic fields on the structure of metal alloy castings[J].Transactions of the Metallurgical Society of AIME,1998,5:1-7. |
| [9] | 谢辉,XU Li-jun,许丽君,袁中岳,郑红星,郭学锋.预变形及液固两相区等温处理对ZA27合金铸态组织的影响[J].中国有色金属学报,2001(01):47-50. |
| [10] | 管仁国,陈彦博,温景林.单辊剪切/冷却工艺对LY11半固态合金组织的影响[[J].中国有色金属学报,2001(z1):5-8. |
| [11] | Manabu KIUCHI;Sumio SUGIYAMA .A New Process to Manufacture Semi-solid Alloys[J].ISIJ International,1995(6):790-797. |
| [12] | 戚正风.固态金属中的扩散与相变[M].北京:机械工业出版社,1998:200-214. |
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