Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第23卷    第4期    总第169期    2013年4月

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文章编号:1004-0609(2013)04-0957-07
喷射沉积连续挤压制备2A12铝合金
汪创伟,尹建成,周静波,刘英莉,高  鹏,李明瀚,钟  毅

(昆明理工大学 材料科学与工程学院,昆明 650093)

摘 要: 采用自制的喷射沉积连续挤压设备,完成2A12铝合金的喷射沉积连续挤压试验,获得了d 7 mm的铝合金制品,并采用光学显微镜和扫描电镜对其显微组织进行分析。结果表明:在本试验条件下,该制品由帽状的粗晶层和细晶层交替堆垛而成,粗晶层的晶粒尺寸不大于30 μm,细晶层的晶粒尺寸在10 μm以下;该制品内仅有少量尺寸在3 μm以内的孔洞,相对密度可达99.1%。

 

关键字: 快速凝固;连续挤压;喷射沉积;难成形材料;显微组织

2A12 aluminum alloy produced by spray forming Conform
WANG Chuang-wei, YIN Jian-cheng, ZHOU Jing-bo, LIU Ying-li, GAO Peng, LI Ming-han, ZHONG Yi

Faculty of Materials Science and Engineering, Kunming University of Science and Technology,
Kunming 650093, China

Abstract:The spray forming Conform experiment of 2A12 aluminum alloy was accomplished by self-made spray forming Conform equipment. Ultimately, the Al alloy rod with diameter of 7 mm is obtained. The microstructure of the Al alloy rod was analyzed by optical microscopy (OM) and scanning electron microscopy (SEM). The results show that the alloy rod is composed of alternately hat-like coarse-grained layer with grain size under 30 μm and fine-grained layer with grain size under 10 μm. There are a little holes with size less than 3 μm, and the relative density of the product is 99.1%.

 

Key words: rapid solidification; Conform; spray forming; difficult forming materials; microstructure

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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