钙和镁处理对38MnVS钢中硫化物夹杂的影响
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摘要
以38MnVS非调质钢为试验对象,通过真空感应炉冶炼得到经钙、镁等不同合金处理的试验钢,并对试验钢铸锭中硫化物夹杂进行了分析研究。结果发现,在钢中添加钙、镁合金可以提高硫化物夹杂中相应元素的含量,且添加钙的效果更加明显,同时钙、镁合金的添加可以降低铸锭中10μm以上硫化物夹杂比例,其比例从5%以上降低到3%以下。另外,对试验钢锻材中硫化物研究发现,钙合金处理后的锻材试样中硫化物平均长宽比最小,只有5.25,硫化物夹杂形态控制效果最好。
Taking non-quenched and tempered 38 MnVS steel as the test object,the test steel treated with calcium alloy and/or magnesium alloy was obtained by vacuum induction furnace smelting,and the sulfide inclusions in the ingot of the test steel were studied.The results show that the contents of calcium or magnesium in sulfide inclusions increase with the addition of corresponding calcium alloy or magnesium alloy in steel,and the effect of calcium alloy is more obvious.In addition,the proportion of sulfide inclusions size above 10 μm can be reduced from 5% or more to less than 3% by addition of calcium alloy or magnesium alloy when smelting.By studying the sulfide in 38 MnVS forged material,it's found that the average length-width ratio of sulfide in the forged material treated with calcium is the smallest,only 5.25,and the control effect of sulfide inclusion morphology is the best.
Taking non-quenched and tempered 38 MnVS steel as the test object,the test steel treated with calcium alloy and/or magnesium alloy was obtained by vacuum induction furnace smelting,and the sulfide inclusions in the ingot of the test steel were studied.The results show that the contents of calcium or magnesium in sulfide inclusions increase with the addition of corresponding calcium alloy or magnesium alloy in steel,and the effect of calcium alloy is more obvious.In addition,the proportion of sulfide inclusions size above 10 μm can be reduced from 5% or more to less than 3% by addition of calcium alloy or magnesium alloy when smelting.By studying the sulfide in 38 MnVS forged material,it's found that the average length-width ratio of sulfide in the forged material treated with calcium is the smallest,only 5.25,and the control effect of sulfide inclusion morphology is the best.
引文
[1]杨才福,张永权,王瑞珍.钒钢冶金原理与应用[M].北京:冶金工业出版社,2012.
[2]邵肖静,邓小玄,崔睿,等.汽车用高品质非调质钢YF45MnVS的热变形行为[J].特殊钢,2010,31(6):56-58.Shao Xiaojing,Deng Xiaoxuan,Cui Rui,et al.Behavior of thermal deformation of high quality non-quenched-tempered steel YF45MnVS for automobile[J].Special Steel,2010,31(6):56-58.
[3]Stuart H.The properties and processing of microalloyed HSLA steels[J].JOM,1991,43(1):35-40.
[4]李梦龙,王福明,孟庆勇,等.硫含量对中碳非调质钢中硫化物及组织的影响[J].工程科学学报,2015,37(2):168-174.Li Menglong,Wang Fuming,Meng Qingyong,et al.Effect of sulfur content on sulfide inclusions and microstructure in medium carbon nonquenched and tempered steel[J].Chinese Journal of Engineering,2015,37(2):168-174.
[5]GB/T 15712-2008,非调质机械结构钢[S].
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[8]李鹏,李光强,郑万.Al-Ti脱氧对非调质钢中Mn S析出行为及组织的影响[J].钢铁研究学报,2013,25(11):49-56.Li Peng,Li Guangqiang,Zheng Wan.Effects of Al-Ti deoxidation on Mn S precipitation and the microstructure of non-quenched and tempered steel[J].Journal of Iron and Steel Research,2013,25(11):49-56.
[9]董成瑞,任海鹏,金同哲.微合金非调质钢[M].北京:冶金工业出版社,2000.
[10]李兵,陈伟庆,郑宏光,等.热加工工艺对非调质钢49Mn VS3中硫化物尺寸和形态的影响[J].金属热处理,2017,42(1):144-148.Li Bing,Chen Weiqing,Zheng Hongguang,et al.Effect of heating process on size and morphology of sulfide inclusions in non-quenched and tempered 49MnVS3 steel[J].Heat Treatment of Metals,2017,42(1):144-148.
[11]Segal A,Charles J A.Influence of particle size on deformation characteristics of manganese sulphide inclusions in steel[J].Metals Technology,1977,4(1):177-182.
[12]Baker T J,Gove K B,Charles J A.Inclusion deformation and toughness anisotropy in hot-rolled steels[J].Metals Technology,1976,3(1):183-193.
[13]吴华杰,岳峰,尤大利,等.Mn/S对含硫非调质钢中硫化物形态的影响[J].北京科技大学学报,2014,36(suppl.1):77-82.Wu Huajie,Yue Feng,You Dali,et al.Effect of Mn/S on sulfide inclusions in non-quenched and tempered steel containing sulfur[J].Journal of University of Science and Technology Beijing,2014,36(suppl.1):77-82.
[14]常开地,赵焕春,张慧峰,等.含硫非调质钢轧后硫化物夹杂形貌的观察[J].金属热处理,2006,31(9):60-64.Chang Kaidi,Zhao Huanchun,Zhang Huifeng,et al.Observation on sulphide inclusions morphology of sulphur-containing microalloyed steel after rolling[J].Heat Treatment of Metals,2006,31(9):60-64.
[15]Tsunekage N,Tsubakino H.Effects of finely dispersed sulfides on microstructure and impact property of ferrite-pearlitic steel[J].Journal of the Japan Society of Powder and Powder Metallurgy,2002,49(3):172-177.
[16]吕泽安,倪红卫,张华,等.利用硫化物改善钢性能的应用研究进展[J].材料与冶金学报,2015,14(1):51-57.LüZean,Ni Hongwei,Zhang Hua,et al.Progress of improvement of steel properties by sulfides[J].Journal of Materials and Metallurgy,2015,14(1):51-57.
[2]邵肖静,邓小玄,崔睿,等.汽车用高品质非调质钢YF45MnVS的热变形行为[J].特殊钢,2010,31(6):56-58.Shao Xiaojing,Deng Xiaoxuan,Cui Rui,et al.Behavior of thermal deformation of high quality non-quenched-tempered steel YF45MnVS for automobile[J].Special Steel,2010,31(6):56-58.
[3]Stuart H.The properties and processing of microalloyed HSLA steels[J].JOM,1991,43(1):35-40.
[4]李梦龙,王福明,孟庆勇,等.硫含量对中碳非调质钢中硫化物及组织的影响[J].工程科学学报,2015,37(2):168-174.Li Menglong,Wang Fuming,Meng Qingyong,et al.Effect of sulfur content on sulfide inclusions and microstructure in medium carbon nonquenched and tempered steel[J].Chinese Journal of Engineering,2015,37(2):168-174.
[5]GB/T 15712-2008,非调质机械结构钢[S].
[6]Hashimura M,Hirata H,Kanisawa H,et al.Development of lead free micro alloyed steel for crank shafts[J].Nippon Steel Technical Report,2003,88:68-71.
[7]Sims C E.The nonmetallic constituents of steel[J].Trans AIME,1959,215:367.
[8]李鹏,李光强,郑万.Al-Ti脱氧对非调质钢中Mn S析出行为及组织的影响[J].钢铁研究学报,2013,25(11):49-56.Li Peng,Li Guangqiang,Zheng Wan.Effects of Al-Ti deoxidation on Mn S precipitation and the microstructure of non-quenched and tempered steel[J].Journal of Iron and Steel Research,2013,25(11):49-56.
[9]董成瑞,任海鹏,金同哲.微合金非调质钢[M].北京:冶金工业出版社,2000.
[10]李兵,陈伟庆,郑宏光,等.热加工工艺对非调质钢49Mn VS3中硫化物尺寸和形态的影响[J].金属热处理,2017,42(1):144-148.Li Bing,Chen Weiqing,Zheng Hongguang,et al.Effect of heating process on size and morphology of sulfide inclusions in non-quenched and tempered 49MnVS3 steel[J].Heat Treatment of Metals,2017,42(1):144-148.
[11]Segal A,Charles J A.Influence of particle size on deformation characteristics of manganese sulphide inclusions in steel[J].Metals Technology,1977,4(1):177-182.
[12]Baker T J,Gove K B,Charles J A.Inclusion deformation and toughness anisotropy in hot-rolled steels[J].Metals Technology,1976,3(1):183-193.
[13]吴华杰,岳峰,尤大利,等.Mn/S对含硫非调质钢中硫化物形态的影响[J].北京科技大学学报,2014,36(suppl.1):77-82.Wu Huajie,Yue Feng,You Dali,et al.Effect of Mn/S on sulfide inclusions in non-quenched and tempered steel containing sulfur[J].Journal of University of Science and Technology Beijing,2014,36(suppl.1):77-82.
[14]常开地,赵焕春,张慧峰,等.含硫非调质钢轧后硫化物夹杂形貌的观察[J].金属热处理,2006,31(9):60-64.Chang Kaidi,Zhao Huanchun,Zhang Huifeng,et al.Observation on sulphide inclusions morphology of sulphur-containing microalloyed steel after rolling[J].Heat Treatment of Metals,2006,31(9):60-64.
[15]Tsunekage N,Tsubakino H.Effects of finely dispersed sulfides on microstructure and impact property of ferrite-pearlitic steel[J].Journal of the Japan Society of Powder and Powder Metallurgy,2002,49(3):172-177.
[16]吕泽安,倪红卫,张华,等.利用硫化物改善钢性能的应用研究进展[J].材料与冶金学报,2015,14(1):51-57.LüZean,Ni Hongwei,Zhang Hua,et al.Progress of improvement of steel properties by sulfides[J].Journal of Materials and Metallurgy,2015,14(1):51-57.