CAJ | 학술논문

研究了热处理对冲头式挤压铸造ZA43-Mn合金显微组织和力学性能的影响。结果表明：挤压铸造ZA43-Mn合金的时效处理使α和β相分解，枝晶偏析减轻，富锰相碎化与钝化，可提高其塑性(δ5=18%)。固溶处理使富锰相和富铜相分解，基体内二次相弥散析出，晶间组织形态和分布改善，可获得较高强度的铸件(σb=510 MPa)。
연구료열처리대충두식제압주조ZA43-Mn합금현미조직화역학성능적영향。결과표명：제압주조ZA43-Mn합금적시효처리사α화β상분해，지정편석감경，부맹상쇄화여둔화，가제고기소성(δ5=18%)。 고용처리사부맹상화부동상분해，기체내이차상미산석출，정간조직형태화분포개선，가획득교고강도적주건(σb=510 MPa)。
Influence of heat treatment on the microstructure and mechanical properties of ZA43-Mn alloy in punch squeeze casting has been studied. The results showed that plasticity of squeez casting ZA43-Mn alloy can be imp roved by aging treatment (σ5 =18%,σb =430 MPa), as a result of α and β phases in alloy decomposition, dendritic segre gation alleviation, Mn-rich phase passivation and disintegration. The casting w ith high strength (σ5 =10%,σb =510 MPa)can be a chieved by solution treatment making Mn-rich and Cu-rich phases to be decomposed, secondary dispersed phase in matrix to be precipitated and the morphology and distribution of inter-dendritic structure to be improved.