STUDY ON THE FORMATION OF DEFECTS IN DURALUMIN FORGINGS

来源期刊：中南大学学报(英文版)1997年第1期

论文作者：Zhang Shenghua Zhu Xuxia Lin Gaoyong Hu Zehao Deng Dongqiao Yan Wenming Wu Shigao Chen Yishu

文章页码：16 - 19

Key words：aluminium alloy; forging. hydrogen embrittlement; oxide film

Abstract: The mechanism of forming defects in 2024. 7075 series aluminium alloy forgings has been studiedby means of metallography. EDAX. SEM etc. The defects are divided into two types by their appearance.needle-shaped and flake-shaped. The mechanism of them forming is discussed. It has been testified that thedefects result from hydrogen or oxide film. The defects can be prevented by controlling the hydrogen contentin the melt and keeping oxide film from involving.