P92钢的蠕变-疲劳损伤行为及蠕变-疲劳损伤本构模型的建立
Creep-Fatigue Damage Behavior and Establishment of Creep-Fatigue Damage Constitutive Model of P92 Steel
摘 要
对P92钢在600 ℃下进行应力和应变控制的蠕变-疲劳试验，分析了载荷水平、保载时间对蠕变-疲劳损伤的影响；结合应力控制下的蠕变-疲劳试验数据，在黏塑性统一本构理论框架下引入修正的Chaboche非线性随动硬化率及蠕变应变并考虑损伤演化规律，构建了基于Chaboche理论的耦合蠕变-疲劳损伤本构模型，模拟了P92钢的蠕变-疲劳循环曲线。结果表明：P92钢在600 ℃下表现为循环软化特性；在应力控制下，P92钢高位保载的损伤与平均应力呈正相关，而低位保载的损伤与平均应力呈负相关；在应变控制下，P92钢产生应力松弛行为，保载时间越长，应力松驰越明显；建立的蠕变-疲劳损伤本构模型可以较好地模拟P92钢的循环特性，对于蠕变-疲劳过程中应力模拟的最大相对误差为7.30%。
Chaboche模型
损伤
蠕变-疲劳
P92 steel
Chaboche model
damage
creep-fatigue
Abstract
Creep-fatigue tests under stress control and strain control were conducted on P92 steel at 600 ℃. The effects of load level and load holding time on the creep-fatigue damage were analyzed. By combination of stress controlled creep-fatigue test data, introducing the modified Chaboche nonlinear follow-up hardening rate and creep strain under the framework of viscoplastic unified constitutive theory, and considering the damage evolution law, the coupled creep-fatigue damage constitutive model based on Chaboche theory was established. The creep-fatigue cyclic curves of P92 steel were simulated. The results show that P92 steel exhibited cyclic softening characteristics at 600 ℃. Under stress control, the damage of P92 steel at high load holding was positively correlated with the average stress, while the damage at low load holding was negatively correlated with the average stress. Under strain control, P92 steel showed stress relaxation behavior, and the longer the load holding time, the more obvious the stress relaxation. The established creep-fatigue damage constitutive model could simulate the cyclic characteristics of P92 steel well, and the maximum relative error of the stress simulation in creep-fatigue process was 7.30%.
中图分类号 TG115.5 DOI 10.11973/jxgccl202110007
所属栏目 物理模拟与数值模拟
基金项目
收稿日期 2020/12/16
修改稿日期 2021/9/15
网络出版日期
作者单位点击查看
备注曹宇(1996-),男,江苏扬州人,硕士研究生
引用该论文: CAO Yu,CUI Xin,JI Dongmei. Creep-Fatigue Damage Behavior and Establishment of Creep-Fatigue Damage Constitutive Model of P92 Steel[J]. Materials for mechancial engineering, 2021, 45(10): 50～57
曹宇,崔鑫,纪冬梅. P92钢的蠕变-疲劳损伤行为及蠕变-疲劳损伤本构模型的建立[J]. 机械工程材料, 2021, 45(10): 50～57
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【25】KANG G Z, LIU Y J, DING J, et al.Uniaxial ratcheting and fatigue failure of tempered 42CrMo steel:Damage evolution and damage-coupled visco-plastic constitutive model[J].International Journal of Plasticity, 2009, 25(5):838-860.
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【27】FOURNIER B, DALLE F, SAUZAY M, et al.Comparison of various 9-12%Cr steels under fatigue and creep-fatigue loadings at high temperature[J].Materials Science and Engineering:A, 2011, 528(22/23):6934-6945.
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【29】CHABOCHE J L.A review of some plasticity and viscoplasticity constitutive theories[J].International Journal of Plasticity, 2008, 24(10):1642-1693.
【2】HOU G L, GONG L J, HUANG C Z, et al.Novel fuzzy modeling and energy-saving predictive control of coordinated control system in 1000 MW ultra-supercritical unit[J].ISA Transactions, 2019, 86:48-61.
【3】WANG X W, ZHANG W, NI J Y, et al.Quantitative description between pre-fatigue damage and residual tensile properties of P92 steel[J].Materials Science and Engineering:A, 2019, 744:415-425.
【4】SHARMA P, DWIVEDI D K.A-TIG welding of dissimilar P92 steel and 304H austenitic stainless steel:Mechanisms, microstructure and mechanical properties[J].Journal of Manufacturing Processes, 2019, 44:166-178.
【5】WANG R Z, ZHU S P, WANG J, et al.High temperature fatigue and creep-fatigue behaviors in a Ni-based superalloy:Damage mechanisms and life assessment[J].International Journal of Fatigue, 2019, 118:8-21.
【6】ZHANG W, WANG X W, CHEN H F, et al.Microstructural damage mechanics-based model for creep fracture of 9%Cr steel under prior fatigue loading[J].Theoretical and Applied Fracture Mechanics, 2019, 103:102269.
【7】XU L Y, ZHAO L, HAN Y D, et al.Characterizing crack growth behavior and damage evolution in P92 steel under creep-fatigue conditions[J].International Journal of Mechanical Sciences, 2017, 134:63-74.
【8】ZHANG S L, XUAN F Z, GUO S J, et al.The role of anelastic recovery in the creep-fatigue interaction of 9-12% Cr steel at high temperature[J].International Journal of Mechanical Sciences, 2017, 122:95-103.
【9】ZHANG S L, XUAN F Z.Interaction of cyclic softening and stress relaxation of 9-12% Cr steel under strain-controlled fatigue-creep condition:Experimental and modeling[J].International Journal of Plasticity, 2017, 98:45-64.
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【11】WEN J B, ZHOU C Y, LI X, et al.Effect of temperature range on thermal-mechanical fatigue properties of P92 steel and fatigue life prediction with a new cyclic softening model[J].International Journal of Fatigue, 2019, 129:105226.
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【15】余海燕, 王友.一种基于Chaboche理论的混合硬化模型及其在回弹仿真中的应用[J].机械工程学报, 2015, 51(16):127-134. YU H Y, WANG Y.A combined hardening model based on Chaboche theory and its application in the springback simulation[J].Journal of Mechanical Engineering, 2015, 51(16):127-134.
【16】贾斌, 张其林, 赖伟, 等.循环荷载作用下铝合金耗能支撑本构关系[J].上海交通大学学报, 2016, 50(11):1742-1747. JIA B, ZHANG Q L, LAI W, et al.Constitutive relation of aluminium alloy energy dissipation braces at cyclic loading[J].Journal of Shanghai Jiao Tong University, 2016, 50(11):1742-1747.
【17】张俊红, 杨硕, 林杰威, 等.考虑分级加载的连续非线性Chaboche-Paris全寿命模型[J].机械工程学报, 2014, 50(2):187-192. ZHANG J H, YANG S, LIN J W, et al.Chaboche-Paris full-life prediction model considering multi-level loading and non-linear continuum damage[J].Journal of Mechanical Engineering, 2014, 50(2):187-192.
【18】孙国芹, 尚德广, 王冬.高温多轴变幅疲劳损伤累积[J].北京工业大学学报, 2012, 38(11):1629-1632. SUN G Q, SHANG D G, WANG D.Fatigue damage accumulation under multiaxial variable amplitude loading at high temperature[J].Journal of Beijing University of Technology, 2012, 38(11):1629-1632.
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【21】胡晶, 吕亚洲, 项辉宇, 等.Chaboche强化模型的使用条件及适用性[J].塑性工程学报, 2013, 20(6):45-50. HU J, LV Y Z, XIANG H Y, et al.The using condition and applicability of Chaboche hardening model[J].Journal of Plasticity Engineering, 2013, 20(6):45-50.
【22】NATH A, RAY K K, BARAI S V.Evaluation of ratcheting behaviour in cyclically stable steels through use of a combined kinematic-isotropic hardening rule and a genetic algorithm optimization technique[J].International Journal of Mechanical Sciences, 2019, 152:138-150.
【23】MOSLEMI N, GOL ZARDIAN M, AYOB A, et al.Evaluation of sensitivity and calibration of the Chaboche kinematic hardening model parameters for numerical ratcheting simulation[J].Applied Sciences, 2019, 9(12):2578.
【24】CHEN J J, JI D M, CAI X D, et al.Effect of holding duration at maximum and minimum stress on creep fatigue interaction of P92 steel[J].Materials at High Temperatures, 2020, 37(1):51-60.
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【27】FOURNIER B, DALLE F, SAUZAY M, et al.Comparison of various 9-12%Cr steels under fatigue and creep-fatigue loadings at high temperature[J].Materials Science and Engineering:A, 2011, 528(22/23):6934-6945.
【28】HOLDSWORTH S R, MASCHEK A K F, BINDA L, et al.Effect of prior cyclic damage removal on high temperature low cycle fatigue endurance[J].Procedia Engineering, 2010, 2(1):379-386.
【29】CHABOCHE J L.A review of some plasticity and viscoplasticity constitutive theories[J].International Journal of Plasticity, 2008, 24(10):1642-1693.
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