Transactions of Materials and Heat Treatment

Title：Influence of equal channel angular extrusion on mechanical property of high purity aluminum

Authors： Gao Songsong Wang Jin

Unit： Qingdao Technological University

KeyWords： high purity aluminum equal channel angular extrusion mechanical property thermal stability

ClassificationCode：TG376

year,vol(issue):pagenumber：2015,40(8):132-134

Abstract：

The high purity aluminum was extruded through routes Bc and C by equal channel angular extrusion(ECAE), and their micro-hardness values were measured by a leitzs micro-hardness tester. The results show that the hardness values can reach 59.8 HV and 54.56 HV by routes Bc and routes C respectively via four pass extrusion, and the influences of ECAE tests on tensile properties are studied. The tensile strength improves by 100% after eight pass extrusion. At the third pass, the tensile strength reaches the maximum of 108 MPa. Elongation drops from 44% to 18.3% dramatically after the first pass, and then increases slightly. The thermal stability tests were conducted by heating samples of 100 ℃ and 200 ℃ with preserving for 1 hour respectively. The results show that the hardness and the tensile strength of the high purity aluminum after annealing decrease, and the influence of different annealing temperatures on the hardness is almost the same, but that on the tensile strength is different.

Funds：

国家自然科学基金资助项目（51205217）

高松松（1991-），女，硕士研究生王进(1978-),男，博士，副教授

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