学术
添加A12O3纳米粉对中空钢55SiMnMo力学性能与夹杂物的影响
王国承[1] 黄浪[2] 谢君阳[3] 鲍宇飞[3] 方克明[1]
[1]北京科技大学冶金与生态工程学院,北京100083 [2]新余钢铁公司,新余338001 [3]湘潭钢铁集团公司,湘潭411101
摘 要:
研究了中空钢55SiMnMo还原前期加0、018％、铸锭时加0．002％的120nmAl2O3纳米粉后钢的力学性能和夹杂物。结果表明，添加0．02％Al2O3纳米粉使锻后空冷55SiMnMo钢的屈服强度提高了13．9％，常温冲击韧性提高了70．8％；场发射SEM观察得出Al2O3纳米颗粒大多数成为非金属夹杂物的核心，钢中大部分夹杂物得到了细化，尺寸均在300nm～3μm之间。[著者文摘]
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文章出处:
《特殊钢》-2008年1期 -19-21页
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Effect of Adding Al2O3 Nano-powder on Mechanical Properties and Inclusions of Hollow Steel 55SiMnMo
Wang Guocheng , Huang Lang, Xie Junyang , Bao Yufei and Fang Keming （ 1 Metallurgical and Eeologieal Engineering Sehool, University of Seienee and Teehnology, Beijing 100083 ; 2 Xinyu Iron and Steel Co, Xinyu 338001 ; 3 Xiangtan Iron and Steel Group Co, Xiangtan 411101 ）
Abstract:
The mechanical properties and inclusions of hollow steel 55SiMnMo added 0. 018% 120 nm A1203 nanopowder in earlier stage of reduction period and 0. 002% nano-powder during ingot casting have been studied. Results showed that with added 0. 02% A1203 nano-powder the yield strength of forged and air-cooled steel 55SiMnMo increased by 13. 9% and impact toughness at ambient temperature increased by 70. 8% ; by field emission SEM observation the most of A1203 nano-particle became non-spontaneous nucleus of non-metallic inclusions and the most inclusions in steel were fined by adding nano-powder, the size of inclusions was 300nm - 3 μm.[著者文摘]
Key words:
Hollow Steel 55SiMnMo, Al2O3 Nano-powder, Mechanical Properties, Non-Metallic Inclusion
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