研究了淬火温度和回火温度对高钒高速钢显微组织和硬度的影响.结果表明:在空冷条件下,当淬火温度低于1 040℃时,随着淬火温度的升高,钢的硬度逐渐升高;超过1 040℃后,随着淬火温度的升高,其硬度又逐渐降低;同时随着淬火温度的升高,钢中碳化物的数量逐渐减少,马氏体不断粗化,而残余奥氏体含量逐渐增加;在1 040℃淬火后,当回火温度低于500℃时,钢的硬度变化不明显;超过500℃后随着回火温度的升高,其硬度先升高,并在520℃时达到最高值,此后钢的硬度又逐渐降低;随着回火温度的升高,马氏体中弥散析出的碳化物数量逐渐增加并聚集长大,同时马氏体和部分残余奥氏体转变为回火马氏体.
参考文献
| [1] | CHANG KYU KIM;JONG IL PARK;SUNGHAK LEE .Effects of Alloying Elements on Microstructure, Hardness, and Fracture Toughness of Centrifugally Cast High-Speed Steel Rolls[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2005(1):87-97. |
| [2] | A. S. Chaus .MODIFYING CAST TUNGSTEN-MOLYBDENUM HIGH-SPEED STEELS WITH NIOBIUM, ZIRCONIUM, AND TITANIUM[J].Metal Science and Heat Treatment,2005(1/2):53-61. |
| [3] | Liujie Xu;Jiandong Xing;Shizhong Wei;Yongzhen Zhang;Rui Long .Study on relative wear resistance and wear stability of high-speed steel with high vanadium content[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2007(3/4):253-261. |
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