CAJ | 학술논문

用光学显微镜（OM）、硬度（HV）和万能试验机对添加不同铝含量（1.5%、2.0%、2.5%、3.0%、3.5%）的复杂黄铜（Cu-22.7Zn-Al-1.0Ni)组织与性能进行了研究.研究结果显示，铝能使合金α相区显著缩小、β相区增加，并起到细化α相、β相的作用，提高合金的抗拉强度、硬度.合金的机械性能随铝含量增加，其抗拉强度和屈服强度提高，而延伸率和冲击韧性下降，当铝含量为3.0%时，0.2 mm Y态板材硬度达到255 HV、抗拉强度达到820 MPa.
용광학현미경（OM）、경도（HV）화만능시험궤대첨가불동려함량（1.5%、2.0%、2.5%、3.0%、3.5%）적복잡황동（Cu-22.7Zn-Al-1.0Ni)조직여성능진행료연구.연구결과현시，려능사합금α상구현저축소、β상구증가，병기도세화α상、β상적작용，제고합금적항랍강도、경도.합금적궤계성능수려함량증가，기항랍강도화굴복강도제고，이연신솔화충격인성하강，당려함량위3.0%시，0.2 mm Y태판재경도체도255 HV、항랍강도체도820 MPa.
This paper studies the microstructure and properties of brass (Cu-22.7Zn-Al-1.0Ni) with different aluminum content (1.5 %, 2.0 %, 2.5 %, 3.0 %, 3.5 %) by using optical microscope, hardness tester and universal materials testing machine. The results show that aluminum alloy can significantly reduce the α-phase region with increased β-phase region. α phase and β phase are refined by improving its tensile strength and hardness. Tensile strength and yield strength of the alloy increase with the addition of Al content. The elongation and impact toughness decrease when the aluminum content reaches 3.0 % and 0.2 mmY state plate hardness reaches 255 HV with tensile strength of 820 MPa.