Characterization of Nanocrystallizatin Surface Layer of 0.4C-1Cr Low Alloy Steel Prepared by Ultrasonic Particulate Peening
来源期刊：材料热处理学报2004年第5期
论文作者：ZHANG Jun-bao LIU Yu-liang XIONG Tian-ying SONG Hong-wei WU Jie ZHAO Xin-qi
关键词：microstructure; ultrasonic particulate peening; surface nanocrystallization; nanocrystalline material;
摘 要：A nanostructured surface layer was fabricated in a quenched and tempered 0.4C-1Cr low alloy steel by ultrasonic particulate peening technique. The microstructure of the nanocrystalline surface layer was characterized by means of TEM and Mossbauer spectroscopy. Experimental results reveal that both cementite and ferrite nanocrystals with an average size of 5 nm were formed in the surface layer of the steel, phase transformation of austenite and dissolution of cementite maybe occur in the process of ultrasonic particulate peening.
ZHANG Jun-bao1，LIU Yu-liang2，XIONG Tian-ying2，SONG Hong-wei1，WU Jie2，ZHAO Xin-qi1
(1.Baosteel Technology Center, Baoshan Iron & Steel CO., LTD., Shanghai China;
2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang China)
摘要:A nanostructured surface layer was fabricated in a quenched and tempered 0.4C-1Cr low alloy steel by ultrasonic particulate peening technique. The microstructure of the nanocrystalline surface layer was characterized by means of TEM and Mossbauer spectroscopy. Experimental results reveal that both cementite and ferrite nanocrystals with an average size of 5 nm were formed in the surface layer of the steel, phase transformation of austenite and dissolution of cementite maybe occur in the process of ultrasonic particulate peening.
关键词:microstructure; ultrasonic particulate peening; surface nanocrystallization; nanocrystalline material;
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