CAJ | 학술논문

研究了分别由半固态热成形方法(SSTT)和部分重熔再结晶方法(RAP)得到的 ZK60镁合金在一定温度下显微组织随等温时间的变化和触变成形试样的力学性能。结果表明，合并长大机制在SSTT合金的组织变化中占主导地位，熟化机制在RAP 合金的组织变化中起主要作用。在相同的等温条件下，与SSTT方法相比，RAP方法可以得到更细小的半固态显微组织，RAP合金组织比SSTT合金组织更圆整。由SSTT方法和RAP方法得到的ZK60镁合金触变成形后均得到了较理想的成形件，触变成形工艺提高了材料的力学性能。与 SSTT 合金相比， RAP合金具有更优越的力学性能。
연구료분별유반고태열성형방법(SSTT)화부분중용재결정방법(RAP)득도적 ZK60미합금재일정온도하현미조직수등온시간적변화화촉변성형시양적역학성능。결과표명，합병장대궤제재SSTT합금적조직변화중점주도지위，숙화궤제재RAP 합금적조직변화중기주요작용。재상동적등온조건하，여SSTT방법상비，RAP방법가이득도경세소적반고태현미조직，RAP합금조직비SSTT합금조직경원정。유SSTT방법화RAP방법득도적ZK60미합금촉변성형후균득도료교이상적성형건，촉변성형공예제고료재료적역학성능。여 SSTT 합금상비， RAP합금구유경우월적역학성능。
The microstructure evolution and mechanical properties of a ZK60 magnesium alloy produced by the semi-solid thermal transformation (SSTT) route and the recrystallization and partial melting (RAP) route were studied, respectively. The microstructure evolution during partial remelting was studied at different temperatures for different time. The tensile mechanical properties of thixoformed components by the two routes at room temperature were examined. The results show that coalescence is dominant in the SSTT alloy and Ostwald ripening is dominant in the RAP alloy. Compared with the SSTT route, the RAP route can produce finer semi-solid microstructure under the similar isothermal holding condition. The microstructure of the RAP alloy is much more spheroidized compared with the SSTT alloy. Thixoforming for the ZK60 magnesium alloy produced by the SSTT and RAP route results in successful filling of the die, and the thixoforming process improves the mechanical properties of ZK60 magnesium alloy. The RAP alloy shows significantly advantageous mechanical properties over that of the SSTT alloy.