利用MTS万能试验机研究了X70管线钢在不同应力加载速率和不同加载过程下的室温蠕变现象,以及室温蠕变对流变应力的影响.结果表明,X70管线钢有明显的室温蠕变现象存在,应力加载速率和加载过程对室温蠕变变形量有明显的影响,而且室温蠕变显著提高了材料的流变应力.并根据位错理论对实验结果进行了分析解释.
参考文献
| [1] | Wang SH.;Chen WX.;Zhang YG. .Room temperature creep and strain-rate-dependent stress-strain behavior of pipeline steels[J].Journal of Materials Science,2001(8):1931-1938. |
| [2] | Zhenbo Zhao;Derek O. Northwood;Cheng Liu;Yunxu Liu .A new method for improving the resistance of high strength steel wires to room temperature creep and low cycle fatigue[J].Journal of Materials Processing Technology,1999(0):569-573. |
| [3] | OEHLERT A;ATRENS A .Room temperature creep of high strength steels[J].Acta Metallurgica Et Materialia,1994,42(05):1493-1508. |
| [4] | TENDO M;TAKESHITA T;NAKAZAWA T et al.Room temperature creep behavior of stainless steels[J].TETSU TO HAGANE-Journal OF THE IRON AND STEEL INSTITUTE OF JAPAN,1993,79(01):98-104. |
| [5] | ASTM STP 665.ASTM STP 665.Stress corrosion cracking-the slow strain-rate technique[S]. |
| [6] | Ming-Chun Zhao;Ke Yang;Yi-Yin Shan .Comparison on strength and toughness behaviors of microalloyed pipeline steels with acicular ferrite and ultrafine ferrite[J].Materials Letters,2003(9/10):1496-1500. |
| [7] | C.H. Lee;H.K.D.H. Bhadeshia;H.-C. Lee .Effect of plastic deformation on the formation of acicular ferrite[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):249-257. |
| [8] | DIAZ M;MADARIAGA I .Improvement of mechanical properties in structural steels by development of acicular ferrite microstructures[J].Journal of Constructional Steel Research,1998,46:413-414. |
| [9] | EVANS H E.Mechanisms of creep fracture[M].New York:Elsevier Applied Science Publishers,1984 |
| [10] | FINNIE L;HELLER W R.Creep of engineering materials[M].London:McGraw-Hill Book Company,1959 |
| [11] | Sadananda, K;Holtz, RL;Lee, EU;Vasudevan, AK .Analysis of overload effects and related phenomena[J].International Journal of Fatigue,1999(Supplement 1):0-0. |
| [12] | SADANANDA K;VASUDEVAN A K .Fatigue crack growth mechanisms in steels[J].International Journal of Fatigue,2003,25:899. |
| [13] | ELBER W .Fatigue crack closure under cyclic tension[J].Engineering Fracture Mechanics,1970,2:37. |
| [14] | ALDEN T H .Theory of mobile dislocation density:application to the deformation of 304stainless steel[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1987,18(05):51-62. |
| [15] | ALDEN T H .Theory of plastic and viscous deformation[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1987,18(05):811-825. |
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