邓德安 张彦斌 李索 童彦刚. 固态相变对P92钢焊接接头残余应力的影响[J]. 金属学报, DOI: 10.11900/0412.1961.2015.0371.

摘要 相关文章 Metrics 全文: PDF(991 KB)   摘要: 采用光学显微镜、显微硬度仪和盲孔法研究了P92钢平板焊接接头的微观组织、显微硬度和表面残余应力分布. 同时, 基于SYSWELD软件开发了考虑材料固态相变的“热-冶金-力学”耦合的有限元计算方法, 并采用该方法模拟了P92钢的Satoh数值实验和单道堆焊接头的温度场及应力场分布, 探讨了固态相变引起的体积变化、屈服强度变化和相变诱导塑性(TRIP)对焊接残余应力形成过程及最终残余应力分布的影响. 实验结果表明, P92钢平板焊接接头焊缝组织为淬(正)火马氏体, 其平均显微硬度约440 HV, 母材组织为回火马氏体, 其显微硬度约240 HV. Satoh数值实验表明, 固态相变引起的体积变化和屈服强度变化不仅对残余应力的形成过程及最终应力的分布和峰值大小有显著影响, 甚至可以改变应力的符号; 而TRIP效应则具有减缓因体积膨胀和屈服强度变化所引起应力变化趋势的作用.进一步的计算结果表明, P92钢堆焊接头焊缝和HAZ的纵向残余应力为压应力, 而靠近HAZ的母材在纵向上存在较大的拉应力, 峰值约600 MPa, 该值超过了P92钢的室温屈服强度; 整个焊接接头的横向残余应力峰值约130 MPa, 远小于其纵向残余应力的峰值. 数值计算结果与盲孔法测量得到的结果比较吻合, 表明了所开发的“热-冶金-力学”耦合的有限元计算方法有较高的计算精度. 关键词 ： 固态相变,  Satoh实验,  残余应力,  相变塑性,  数值模拟.     Abstract：Microstructure and welding residual stresses in ferritic heat-resistant steels such as P92 have been considered as the most important factors in the structural integrity and life assessment of power plant weldments. Applying computational tools to predict microstructure and residual stress distribution in practical welded structures is a preferable way to create safer, more reliable and lower cost structures. In this study, the effects of volume change, yield strength variation and transformation induced plasticity (TRIP) on the generation of residual stresses in P92 steel welded joints were investigated experimentally and numerically. Optical mi-croscope and Vickers hardness tester were used to characterize the microstructure and hardness of the weldments. The hole-drilling strain-gage method was employed to determine the residual stress distribution across the weldments. Based on SYSWELD software, a thermal-metallurgical-mechanical finite element method was developed to simulate welding temperature filed and residual stress distribution in P92 steel joints. Firstly, numerical experiments of Satoh test were carried out to clarify the influence of solid-state phase transfor-mation on the formation of residual stresses. The simulation results show that the volume change and the yield stress variation have a great effect on the magnitude and distribution profiles of residual stresses in the FZ and HAZ, and even alter the sign of the stresses, while TRIP have a relaxation effect on the tendency of stress variation during phase transformation. Secondly, a finite element model (FEM) was established to calculate the welding residual stress distribution in a single-pass bead-on P92 steel joint. In the FEM, three main constituent phases (austenite, as-quenched martensite and tempered martensite) in P92 steel were taken into account. Finally, the simulation results of welding residual stress were compared with the ex-periments obtained by hole-drilling method. The numerical simulation results are generally in a good agreement with the measured data. Key words： Solid-state phase transformation    Satoh test    residual stress    TRIP    numerical simulation 收稿日期: 2015-07-10      基金资助:异种钢焊接接头残余应力理论预测的基础问题研究 （自然科学基金） 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 邓德安 张彦斌 李索 童彦刚 44.8K 链接本文: https://www.ams.org.cn/CN/Y0/V/I/0 [1] 王强, 李小兵, 郝俊杰, 陈波, 张滨, 张二林, 刘奎. 一种新型Ti-Al-Mn-Nb合金的固态相变行为[J]. 金属学报, 2025, 61(7): 1060-1070. [2] 杨明辉, 李星吾, 孙崇昊, 阮莹. 定向凝固与固态相变双联协控下Monel K-500合金的组织和力学性能[J]. 金属学报, 2025, 61(4): 561-571. [3] 余东, 马威龙, 王亚莉, 王锦程. Au-Pt合金凝固-固态相变微观组织演化相场法模拟[J]. 金属学报, 2025, 61(1): 109-116. [4] 林皓, 李建, 杨钊龙, 钟圣怡. 中子衍射应力分析技术及其应用进展[J]. 金属学报, 2024, 60(8): 1017-1030. [5] 谷黎明, 冯效铭, 于朝, 张峻凡, 刘振宇, 何伦华, 卢怀乐, 李小虎, 王晨, 张晓东, 肖伯律, 马宗义. 深冷循环对SiC/Al复合材料宏微观残余应力的影响[J]. 金属学报, 2024, 60(8): 1031-1042. [6] 李彪, 张龙, 颜廷毅, 付华萌, 袁旭东, 文明月, 张宏伟, 李宏, 张海峰. 热处理工艺和W丝特性对W丝增强锆基非晶复合材料残余应力的影响[J]. 金属学报, 2024, 60(8): 1055-1063. [7] 周牧, 王倩, 王延绪, 翟梓融, 何伦华, 李昺, 马英杰, 雷家峰, 杨锐. 焊前预处理对钛合金厚板焊接残余应力的影响[J]. 金属学报, 2024, 60(8): 1064-1078. [8] 申洋, 谷征满, 王聪. 铁素体系耐热钢焊接热影响区相变行为的CSLM原位观察[J]. 金属学报, 2024, 60(6): 802-816. [9] 熊毅, 栾泽伟, 马云飞, 厉勇, 查小琴. 超音速微粒轰击诱导表面纳米化对300M钢腐蚀疲劳行为的影响[J]. 金属学报, 2024, 60(5): 627-638. [10] 徐一斐, 张楠, 许培鑫, 杜博睿, 史华, 王淼辉. 超高速激光原位熔覆Ti(C, B)/Ni60A复合涂层的界面特征与表面磨损机理[J]. 金属学报, 2024, 60(12): 1721-1730. [11] 毕中南, 秦海龙, 刘沛, 史松宜, 谢锦丽, 张继. 高温合金锻件残余应力量化表征及控制技术研究进展[J]. 金属学报, 2023, 59(9): 1144-1158. [12] 杜金辉, 毕中南, 曲敬龙. 三联冶炼GH4169合金研究进展[J]. 金属学报, 2023, 59(9): 1159-1172. [13] 李时磊, 李阳, 王友康, 王胜杰, 何伦华, 孙光爱, 肖体乔, 王沿东. 基于中子与同步辐射技术的工程材料/部件多尺度残余应力评价[J]. 金属学报, 2023, 59(8): 1001-1014. [14] 王重阳, 韩世伟, 谢峰, 胡龙, 邓德安. 固态相变和软化效应对超高强钢焊接残余应力的影响[J]. 金属学报, 2023, 59(12): 1613-1623. [15] 张开元, 董文超, 赵栋, 李世键, 陆善平. 固态相变对Fe-Co-Ni超高强度钢长臂梁构件焊接-淬火过程应力和变形的影响[J]. 金属学报, 2023, 59(12): 1633-1643. Viewed Full text Abstract Cited   Shared      Discussed