成分对管线钢DWTT性能的影响
|
摘要
系统分析X70、X80管线钢中的C、Mn等基本元素,以及微合金化元素Nb、V、Ti、Al,其他合金元素Cu、Ni、Cr、Mo和夹杂元素P、S、H、N、O、Si等对于X70、X80管线钢落锤动态撕裂试验(Drop weight tear test,DWTT)性能的影响,通过趋势性回归,找出各种元素影响DWTT韧性剪切面积的规律。分析表明,要得到良好的DWTT韧性剪切面积(在85%以上),各元素合理控制范围w_C≤0.075%,w_(Mn)≤1.80%,w_(Nb)≤0.08%,w_V≤0.05%,w_(Ti)≤0.015%,w_(Cu)≤0.2%,w_(Cr)≤0.3%,w_(Mo)≤0.3%,w_H≤2×10-4%,w_O≤30×10~(-4)%,w_N≤60×10~(-4)%,w_P≤0.013%,w_S≤0.002%。在实践生产中提出最经济、最优化的生产管线钢的成分方案,对我国钢厂和石油公司在管道设计时具有积极的指导意义。
The influence of different kinds of elements on the drop weight tear test( DWTT)property of X70 / X80 pipeline steel is systematically analyzed. Basing on application of regression analysis,relationship between DWTT shear area and basic elements C,Mn,micro alloying elements Nb,V,Ti,Al,other alloying elements Cu,Ni,Cr,Mo and inclusion related elements P,S,H,N,O,Si are studied. Analysis shows that,to maintain good DWTT performance( ductile shear area≥85%),reasonable control range of each element is given below: w_C≤0. 075%,w_(Mn)≤1. 80%,w_(Nb)≤0. 08%,w_V≤0. 05%,w_(Ti)≤0. 015%,w_(Cu)≤0. 2%,w_(Cr)≤0. 3%,w_(Mo)≤0. 3%,w_H≤2 ×10- 4%,w_O≤30 × 10- 4%,w_N≤60 × 10- 4%,w_P≤0. 013%,w_S≤0. 002%. The analysis result is helpful to the most economical and optimization of chemical composition design of pipeline steel,and it has the positive guiding significance to our country's pipeline steel production.
The influence of different kinds of elements on the drop weight tear test( DWTT)property of X70 / X80 pipeline steel is systematically analyzed. Basing on application of regression analysis,relationship between DWTT shear area and basic elements C,Mn,micro alloying elements Nb,V,Ti,Al,other alloying elements Cu,Ni,Cr,Mo and inclusion related elements P,S,H,N,O,Si are studied. Analysis shows that,to maintain good DWTT performance( ductile shear area≥85%),reasonable control range of each element is given below: w_C≤0. 075%,w_(Mn)≤1. 80%,w_(Nb)≤0. 08%,w_V≤0. 05%,w_(Ti)≤0. 015%,w_(Cu)≤0. 2%,w_(Cr)≤0. 3%,w_(Mo)≤0. 3%,w_H≤2 ×10- 4%,w_O≤30 × 10- 4%,w_N≤60 × 10- 4%,w_P≤0. 013%,w_S≤0. 002%. The analysis result is helpful to the most economical and optimization of chemical composition design of pipeline steel,and it has the positive guiding significance to our country's pipeline steel production.
引文
[1]吴金辉,李磊,王高峰.管线钢管韧脆转变温度影响因素分析[J].焊管,2011,34(1):48-53.
[2]丁富连,方健.宝钢宽厚板断裂韧度试验若干问题的研究对策[J].机械强度,2004,26(S):295-297.
[3]李冰,郑磊,章传国.不同C含量对X70管线钢组织和性能的影响[J].焊管,2011,34(8):17-21.
[4]孙华,孙彦辉,王帅,等.API X80管线钢异常碳化物形成机理[J].材料热处理学报,2011,3(6):45-50.
[5]刘竹林,黄雄源.管线钢生产现状及碳含量对其性能的影响[J].湖南冶金职业技术学院学报,2007,7(2):39-41.
[6]Kruglova A A,Orlov V V,Sych O V,et al.Improvement of chemical composition and production regimes for manufacture of K65–K70(X80–X90)strip based on simulation[J].Metallurgist,2013,57(1/2):113-112.
[7]周民,杜林秀,衣海龙,等.X80管线钢落锤撕裂性能的影响因素分析[J].钢铁研究学报,2009,21(9):33-36.
[8]李红英,胡继东,李阳华.微合金元素对X70管线钢韧性的影响[J].材料热处理学报,2012,33(1);121-127.
[9]李大鹏,李秉强,姜学峰.X70管线钢中夹杂物控制试验研究[J].本钢技术,2011(2):12-14.
[10]ZHOU Maiwen,YU Hao.Effects of precipitates and inclusions on the fracture toughness of hot rolling X70 pipeline steel plates[J].International Journal of Minerals,Metallurgy and Materials,2012,19(9):805-810.
[11]许晓东,朱志远,王文军,等.X70管线钢中碳磷硫氮的控制[J].钢铁,2010,45(5):20-23.
[2]丁富连,方健.宝钢宽厚板断裂韧度试验若干问题的研究对策[J].机械强度,2004,26(S):295-297.
[3]李冰,郑磊,章传国.不同C含量对X70管线钢组织和性能的影响[J].焊管,2011,34(8):17-21.
[4]孙华,孙彦辉,王帅,等.API X80管线钢异常碳化物形成机理[J].材料热处理学报,2011,3(6):45-50.
[5]刘竹林,黄雄源.管线钢生产现状及碳含量对其性能的影响[J].湖南冶金职业技术学院学报,2007,7(2):39-41.
[6]Kruglova A A,Orlov V V,Sych O V,et al.Improvement of chemical composition and production regimes for manufacture of K65–K70(X80–X90)strip based on simulation[J].Metallurgist,2013,57(1/2):113-112.
[7]周民,杜林秀,衣海龙,等.X80管线钢落锤撕裂性能的影响因素分析[J].钢铁研究学报,2009,21(9):33-36.
[8]李红英,胡继东,李阳华.微合金元素对X70管线钢韧性的影响[J].材料热处理学报,2012,33(1);121-127.
[9]李大鹏,李秉强,姜学峰.X70管线钢中夹杂物控制试验研究[J].本钢技术,2011(2):12-14.
[10]ZHOU Maiwen,YU Hao.Effects of precipitates and inclusions on the fracture toughness of hot rolling X70 pipeline steel plates[J].International Journal of Minerals,Metallurgy and Materials,2012,19(9):805-810.
[11]许晓东,朱志远,王文军,等.X70管线钢中碳磷硫氮的控制[J].钢铁,2010,45(5):20-23.