4032铝合金活塞锻件表面黑色缺陷分析  

Analysis on Black Defects on Surface of 4032 Aluminum Alloy Forgings for Piston

作　　者：霍庆利[1] 张晶[1] 

机构地区：[1]东北轻合金有限责任公司,黑龙江哈尔滨150060

出　　处：《铝加工》2012年第6期45-47,共3页Aluminium Fabrication

摘　　要：针对4032铝合金活塞锻件底座表面存在的黑色缺陷,通过对缺陷部位和正常部位的化学成分、硬度、显微组织及重新淬火时效后的硬度和显微组织等多方面进行了分析,确定4032铝合金活塞锻件底座表面的黑色缺陷实际为热处理不充分所致,并对黑色缺陷形成机理和改进措施进行了阐述。Aiming at the black defects on base surface of 4032 aluminum alloy forgings for piston, the chemical composition, hardness and microstructure of discontinuous and normal position, as well as the hardness and microstructure after re-quenching and aging were analyzed. It was found that the black defects was caused by insufficient heating treatment. Furthermore, the forming mechanism and improvement measures for black defects were described.

关 键 词：活塞 硬度 淬火 显微组织 

分 类 号：TG319[金属学及工艺—金属压力加工]