含硅低合金高强度贝氏体钢的环境断裂敏感性
Environmental Fracture Sensitivity of Low Alloy High-strength Bainitic Steels Containing Silicon
摘 要
为研究新型高强度贝氏体钢的环境适应性,测试了两种不同含碳量的含硅高强度贝氏体钢的力学性能和环境断裂敏感性.结果表明,强度(含碳量)对贝氏体钢的环境断裂敏感性具有明显的影响,高含碳量贝氏体钢(HC)(C 0.88%,σy=1818 MPa)试样的环境断裂敏感性明显高于低含碳量贝氏体钢(LC)(C 0.33%,σy=1310 MPa) ,HC钢性能较同强度级别马氏体时效钢T250为差,而LC钢性能相当于相同强度级别的30CrMnSiNi2A钢.
力学性能
环境断裂
bainitic steel
mechanical property
environmental fracture
Abstract
To investigate the environmental adaptability of two bainitic steels contained silicon,the mechanical properties and environmental fracture sensitivity of the two steels with different carbon contents were tested.The results showed that the environmental fracture sensitivity of the bainitic steels was affected by the strength (the carbon content) of the steels obviously.The environmental fracture sensitivity of the steel with high carbon content(HC)(C 0.88%,σy=1818 MPa) was much higher than that with low carbon content(HL)(C 0.33%,σy=1310 MPa).The environmental fracture sensitivity of the HC steel was higher than that of the T250 maraging steel at the same strength level.And the environmental fracture sensitivity of the LC steel was equivalent to that of the 30CrMnSiNi2A steel at the same strength level.
中图分类号 TG174.2+1 TG111.91
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(No.50901010);中国博士后科学基金资助项目(No.20080430309)
收稿日期 2009/10/9
修改稿日期 2009/11/13
网络出版日期
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引用该论文: JIANG Bo,CHEN Gang,LIU Fen-bin,REN Xue-chong,CHU Wu-yang. Environmental Fracture Sensitivity of Low Alloy High-strength Bainitic Steels Containing Silicon[J]. Corrosion & Protection, 2010, 31(9): 665～669
被引情况:
【1】任学冲,金莹,王莎莎,宿彦京,乔利杰,张明如,崔银会, "贝氏体车轮钢的氢脆敏感性",腐蚀与防护 32, 863-867(2011)
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参考文献
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【3】Caballero F G,Bhadeshia H K D H.Very strong low temperature bainite[J].Materials Science and Technology,2002(18):279-284.
【4】Garcia-Mateo C,Caballerol F G,Bhadeshia H K D H.Acceleration of low-temperature Bainite[J].ISIJ International,2003(11):1821-1825.
【5】Garcia-Mateo C,Caballerol F G,Bhadeshia H K D H.Development of hard bainite[J].ISIJ International,2003(8):1238-1243.
【6】Caballero F G,Bhadeshia H K D H.Very strong bainite[J].Current Opinion in Solid State and Materials Science,2004(8):251-257.
【7】Zhang M R,Gu H C.Microstructure and properties of carbide free bainite railway sheels produced by programmed quenching[J].Materials Science and Technology,2007,23:970-974.
【8】Zhang F C,Wang T S,Zhang P,et al.A novel method for the development of a low temperature bainitic microstructure in the surface layer of low carbon steel[J].Scripta Materialia,2008,59:294-296.
【9】Pointner P.High strength rail steel-the importance of material properties in contact mechanics problems[J].Wear,2008,265:1373-79.
【10】Zmudzinshi C.Hydrogen in metal (paris)[M].N Y:Pergamon Press,1977.
【11】Sandoz G.Unified theory for some effects of hydrogen source,allying elements,and potential on crack growth in martensitic 4340 steel[J].Met.Trans.,1972(3):1169-74.
【12】Chu W Y,Liu T H,Hsiao C M,et al.Mechanism of stress corrosion cracking of low alloy steel in water[J].Corrosion,1981,31:320-23.
【13】GB12445.3-1990.高强度合金楔形张开加载预裂纹试样应力腐蚀试验方法[S].
【14】Liu X Y,Kameda J,Anderegg J W,et al.Hydrogen-induced cracking in a very-high-purity high-strength steel[J].Materials Science and Engineering A,2008(1/2):218-220.
【15】Chu W Y,Hsiao C M,Li W X.Mechanism of low crack growth and stress corrosion cracking in austenitic stainless steel[J].Metall.Trans,A,1984,15:2087-2092.
【16】Gerberich W W,Garry J,Lessar J F.Effect of hydrogen on behavior of materials[M].N Y:AIME,1976.
【17】Li H L,Gao K W,Qiao L J,et al.Strength effect in stress corrosion cracking of high strength steel in aqueous solution[J].Corrosion,2001,57:295-299.
【18】Ren X C,Chu W Y,Su Y J,et al.The effects of atomic hydrogen and flake on mechanical properties of a tyre steel[J].Materials Science and Engineering A,2008,491:164-171.
【19】Zhang Y P,Shi D M,Chu W Y,et al.Hydrogen-assisted cracking of T-250 maraging steel[J].Materials Science and Engineering A,2008,471:34-37.
【20】Zhao X W,Chu W Y,Su Y J,et al.Domain switching and delayed propagation of indentation crack in BaTiO3 single crystal under sustained stress[J].Acta Metallurgica Sinica,2006,42:13-18.
【21】Fu C L,Painter G S.First principles investigation of hydrogen embrittlement in FeAl[J].Journal of Materials Research,1991(6):719-723.
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