CAJ | 학술논문

对经过连续铸造、固溶和冷拉拔的Cu-Cr-Ag-Y合金进行时效处理，研究了时效工艺参数对合金组织和性能的影响，探讨了合金的时效特征，并在自制磨损试验机上对合金线材进行载流滑动磨损试验。结果表明：铜基体中球形第二相的均匀析出是合金综合性能提高的根本原因。Cu-0.6Cr-0.15Ag-0.03Y合金经450℃/4 h时效处理后可以获得较好的综合性能，其显微硬度与导电率达到245Hv和80.7% IACS。随着加载电流的增加，合金磨损量变大，其载流磨损机制为电侵蚀磨损、磨粒磨损和粘着磨损。
대경과련속주조、고용화랭랍발적Cu-Cr-Ag-Y합금진행시효처리，연구료시효공예삼수대합금조직화성능적영향，탐토료합금적시효특정，병재자제마손시험궤상대합금선재진행재류활동마손시험。결과표명：동기체중구형제이상적균균석출시합금종합성능제고적근본원인。Cu-0.6Cr-0.15Ag-0.03Y합금경450℃/4 h시효처리후가이획득교호적종합성능，기현미경도여도전솔체도245Hv화80.7% IACS。수착가재전류적증가，합금마손량변대，기재류마손궤제위전침식마손、마립마손화점착마손。
Effects of aging process parameters on microstructures and properties of a Cu-Cr-Ag-Y alloy which was produced by continuous casting, solution-treated and cold draw were investigated,and the aging characteristics of the alloy was analyzed.The electrical sliding wear experiment was carried out using a self-made electrical wear tester. The results reveal that the uniform precipitation of the spherical second phase from the copper matrix is the root cause of the improvement of comprehensive performance. A better combination of properties is obtained for the Cu-0.6Cr-0.15Ag-0.03Y alloy aged at 450℃ for 4 h, the micro-hardness and electrical conductivity of the alloy are 245Hv and 80.7%IACS, respectively. The wear loss of the alloy increased with increasing electrical current, and its electrical sliding wear mechanism is the electrical erosion wear, abrasive wear and adhesion wear.