Reduced argon bubble formation in oxide dispersion strengthened steels by high-energy mechanical alloying

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• 作者：Eun-Kwang Park^a ; ^c ; Sung-Mo Hong^a ; Gyoung-Ja Lee^a ; Jin-Ju Park^a ; Min-Ku Lee^a ; ^{leeminku@kaeri.re.kr" class="auth_mail" title="E-mail the corresponding author} ; Jung Gu Lee^b ; ^{jglee88@ulsan.ac.kr" class="auth_mail" title="E-mail the corresponding author} ; Kyeong-Won Seol^c
• 关键词：Oxide dispersion strengthened (ODS) alloy ; Mechanical alloying ; Microstructure ; Argon bubble ; Transmission electron microscopy
• 刊名：Scripta Materialia
• 出版年：2016
• 出版时间：1 March 2016
• 年：2016
• 卷：113
• 期：Complete
• 页码：31-34
• 全文大小：948 K

文摘

We report a dramatic suppression of argon bubble formation in oxide dispersion strengthened steels through a high-energy mechanical alloying route. The volume fraction of argon bubbles trapped at the surface of the oxide particles is greatly reduced from 2.1 × 10^− 3 to 1.4 × 10^− 4%, when the milling energy input rate is increased from 20 to 190 kJ/g∙hit. It is found that the higher milling energy, associated with a reduction of milling time, yields reduced argon contamination of the ball-milled powders, leading to enhanced microstructural homogeneity in consolidated oxide dispersion strengthened steels.