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Characterization of Nanocrystallizatin Surface Layer of 0.4C-1Cr Low Alloy Steel Prepared by Ultrasonic Particulate Peening 被引量:4

Characterization of Nanocrystallizatin Surface Layer of 0.4C-1C Low Alloy Steel Prepared by Ultrasonic Particulate Peening
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摘要 A nanostructured surface layer was fabricated in a quenched and tempered 0.4C-lCr 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 paniculate peening. A nanostructured surface layer was fabricated in a quenched and tempered 0.4C-lCr 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 paniculate peening.
出处 《材料热处理学报》 EI CAS CSCD 北大核心 2004年第05B期1257-1259,共3页 Transactions of Materials and Heat Treatment
关键词 显微结构 超声波喷丸处理 表面毫微结晶 0.4C-1Cr低合金钢 microstructure, ultrasonic particulate peening, surface nanocrystallization, nanocrystalline material
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