CAJ | 학술논문

由于锻坯的组织和力学性能对其后续成形过程具有重要的影响,研究锻坯的组织和力学性能均匀性具有重要实用价值。利用实验的方法,对比研究了 Mg-13Gd-4Y-0.5Zr 合金材料的三次多向锻造后的组织演变和力学性能的不同。实验结果表明：随着锻造次数的增加,动态再结晶明显,Mg-13Gd-4Y-0.5Zr 镁合金晶粒逐渐细化,析出相逐渐增多；并且,随着锻造次数的增多,硬度变化呈小幅波动的趋势,且第一次多向锻造后的硬度最大。
유우단배적조직화역학성능대기후속성형과정구유중요적영향,연구단배적조직화역학성능균균성구유중요실용개치。이용실험적방법,대비연구료 Mg-13Gd-4Y-0.5Zr 합금재료적삼차다향단조후적조직연변화역학성능적불동。실험결과표명：수착단조차수적증가,동태재결정명현,Mg-13Gd-4Y-0.5Zr 미합금정립축점세화,석출상축점증다；병차,수착단조차수적증다,경도변화정소폭파동적추세,차제일차다향단조후적경도최대。
The microstructure and mechanical properties of forging stocks have important influences on the subsequent forming process, therefore the study on the uniformity of the microstructure and mechanical properties of forging stocks has important practical value. This paper compared and studied the microstructure evolution and mechanical properties of the alloy material Mg-13Gd-4Y-0. 5Zr after three times of multidirectional forging through experimental methods. The experi-mental results showed that along with the increasing number of forging, the Mg-13Gd-4Y-0. 5Zr magnesium grain would be gradually refined, and the precipitation phase gradually increased. In addition, along with the increasing number of forging, the hardness variation showed a trend with small fluctuations, and the maximum hardness was found after the first multidirectional forging.