输油管道用316L和2205不锈钢低温蠕变模型的选择与验证
Low Temperature Creep Model Selection and Verification of 316L and 2205 Stainless Steels for Oil Pipeline
摘 要
分别进行了80 ℃下316L不锈钢和20 ℃下2205不锈钢的蠕变试验, 对试验数据拟合后分别得到了两种不锈钢的蠕变幂模型和对数模型,并推导得到了应力松驰模型; 利用蠕变和应力松驰模型分别模拟了两种不锈钢的拉伸蠕变曲线和应力松驰曲线, 并与试验曲线进行了对比分析。结果表明: 两种模型都能很好地描述316L和2205不锈钢的低温蠕变行为, 但幂模型在蠕变和松弛模拟中都表现得更好。
应力松弛
幂模型
对数模型
2205不锈钢
316L不锈钢
low temperature creep
stress relaxation
power-law model
logarithmic model
2205 stainless steel
316L stainless steel
Abstract
The creep tests of 316L stainless steel at 80 ℃ and of 2205 stainless steel at 20 ℃ were conducted respectively. The power-law creep model and logarithmic creep model of the two stainless steels were obtained after the tested data fitting and the stress relaxation models were deduced. The tensile creep curves and stress relaxation curves of the two stainless steels were simulated by the creep and stress relaxation models respectively. The simulated results were compared and analysed with the experimental curves. The results show that both models can describe the low temperature creep behaviour of the 316L and 2205 stainless steels well. The power-law model performed better in creep fitting and relaxation simulation.
中图分类号 TB31 DOI 10.11973/jxgccl201604013
所属栏目 物理模拟与数值模拟
基金项目
收稿日期 2015/1/31
修改稿日期 2016/2/15
网络出版日期
作者单位点击查看
备注李京波(1989-), 男, 河南南阳人, 硕士研究生。
引用该论文: LI Jing-bo,JIN Xue-jun. Low Temperature Creep Model Selection and Verification of 316L and 2205 Stainless Steels for Oil Pipeline[J]. Materials for mechancial engineering, 2016, 40(4): 54～58
李京波,金学军. 输油管道用316L和2205不锈钢低温蠕变模型的选择与验证[J]. 机械工程材料, 2016, 40(4): 54～58
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参考文献
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【4】OEHLERT A,ATRENS A.Room temperature creep of high strength steels［J］. Acta Metallurgica et Materialia,1994,42(5): 1493-1508.
【5】LIU Cheng,LIU Ping,ZHAO Zhen-bo,et al.Room temperature creep of a high strength steel［J］.Materials & Design,2001,22(4): 325-328.
【6】李科,施岱艳,李天雷,等.含CO2气田用316L奥氏体不锈钢的应用边界条件［J］.机械工程材料,2012,36(11): 26-28.
【7】ANDRADE E N C.On the viscous flow in metals and allied phenomena［J］.Proceedings of the Royal Society of London: A,1910,84(567): 1-12.
【8】FINDLEY W N,LAI J S,ONARAN K.Creep and Relaxation of Nonlinear Viscoelastic Materials［M］.New York: Courier Dover Publications,2013.
【9】GAROFALO F.Fundamentals of Creep and Creep Rupture in Metals［M］.New York: MacMillan, 1965.
【10】EVANS R W, WILSHIRE B.Creep of Metals and Alloy［M］.London: Inst Metals, 1985.
【11】NABARRO F RN.The time constant of logarithmic creep and relaxation［J］.Material Science and Engineering: A, 2001,309/310: 227-228.
【12】HOFF N J,JAHSMAN W E,NACHBAR W.A study of creep collapse of a long circular cylindrical shell under uniform external pressure［J］.Journal of the Aerospace Sciences,1959,26(10): 663-669.
【13】BLAIR G W S,VEINOGLOU B C.A study of the firmness of soft materials based on nutting's equation［J］.Journal of Scientific Instruments,1944,21(9): 149-154.
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