双峰结构纯钛的低周疲劳性能研究：试验和模拟

doi:10.3901/JME.2024.12.228

摘要/Abstract

摘要： 通过低温轧制和退火热处理在纯钛的微观组织中引入了双峰晶粒分布，对双峰结构纯钛(BM-Ti)的拉伸性能和低周疲劳性能进行了系统地研究，结果表明，相比于原始粗晶纯钛(CG-Ti)和超细晶纯钛(UFG-Ti)，双峰结构纯钛表现出高屈服强度(634.4 MPa)和高均匀伸长率(7.2%)的优异强韧匹配性能。然而，双峰结构并不能有效提高纯钛的低周疲劳寿命。循环过程中，双峰结构纯钛的粗晶粒区域承担了大部分的塑性变形，大量位错在粗晶粒内部进行堆积，并逐渐分割晶粒导致粗晶粒细化。通过晶体塑性有限元法模拟了双峰结构纯钛的低周疲劳行为，引入了累积塑性应变以评估疲劳过程中的损伤，发现双峰结构纯钛的异质界面处由于应变不相容性更容易导致疲劳裂纹的萌生。

关键词: 双峰结构, 强度-韧性权衡, 低周疲劳, 裂纹萌生

Abstract: The bimodal-grained distribution was introduced into the microstructure of pure titanium through cryo-rolling combined with annealing heat treatment. The tensile properties and low-cycle fatigue properties of bimodal pure titanium (BM-Ti) were systematically studied. Compared to the original coarse-grained pure titanium (CG-Ti) and ultra-fine grained pure titanium (UFG-Ti), BM-Ti exhibited excellent strength-ductility matching properties with high yield strength (634.4 MPa) and high uniform elongation (7.2%). The results of low-cycle fatigue experiments indicate that the bimodal structure cannot effectively improve the fatigue life of pure titanium. During the cycling process, the coarse-grained area of BM-Ti bore most of the plastic deformation, and a large number of dislocations accumulated within coarse grains, gradually dividing the grains and leading to the refinement of coarse grains. The low-cycle fatigue behavior of BM-Ti was simulated by crystal plasticity finite element method, and accumulated plastic strain was introduced to evaluate the damage during the fatigue process. It was found that the heterogeneous interface of BM-Ti is more prone to fatigue crack initiation due to strain incompatibility.

Key words: bimodal structure, strength-ductility trade-off, low-cycle fatigue, fatigue crack initiation

中图分类号:

TG113

唐沛, 张勇, 贾云飞, 李晓, 汪永纪. 双峰结构纯钛的低周疲劳性能研究：试验和模拟[J]. 机械工程学报, 2024, 60(12): 228-239.

TANG Pei, ZHANG Yong, JIA Yunfei, LI Xiao, WANG Yongji. Study on Low-cycle Fatigue Performance of Pure Titanium with Bimodal Structure: Experiment and Simulation[J]. Journal of Mechanical Engineering, 2024, 60(12): 228-239.

导出引用管理器 EndNote|Reference Manager|ProCite|BibTeX|RefWorks

链接本文: http://www.cjmenet.com.cn/CN/10.3901/JME.2024.12.228

http://www.cjmenet.com.cn/CN/Y2024/V60/I12/228

参考文献

[1] 赵永庆，葛鹏，辛社伟. 近五年钛合金材料研发进展[J]. 中国材料进展，2020，39(7)：527-534. ZHAO Yongqing，GE Peng，XIN Shewei. Progresses of R&D on Ti-Alloy materials in recent 5 years[J]. Materials China，2020，39(7)：527-534.
[2] VALIEV R Z，ALEXANDROV I V. Nanostructured materials from severe plastic deformation[J]. Nanostructured Materials，1999，12(1-4)：35-40.
[3] ZHU Y，AMEYAMA K，ANDERSON P M，et al. Heterostructured materials：Superior properties from hetero-zone interaction[J]. Materials Research Letters，2021，9(1)：1-31.
[4] WU Xiaolei，JIANG Ping，CHEN Liu，et al. Extraordinary strain hardening by gradient structure[J]. Proceedings of the National Academy of Sciences of the United States of America，2014，111(20)：7197-7201.
[5] WANG Yinmin，CHEN Mingwei，ZHOU Fenghua，et al. High tensile ductility in a nanostructured metal[J]. Nature，2002，419(6910)：912-915.
[6] NAGATA M. Effects of microstructure on mechanical properties of harmonic structure designed pure Ni[J]. Materials Transactions，2019，60(9)：1914-1920.
[7] WU Xiaolei，YANG Muxin，YUAN Fuping，et al. Heterogeneous lamella structure unites ultrafine-grain strength with coarse-grain ductility[J]. Proceedings of the National Academy of Sciences of the United States of America，2015，112(47)：14501.
[8] LIN Yan，PAN Jie，ZHOU Haofei，et al. Mechanical properties and optimal grain size distribution profile of gradient grained nickel[J]. Acta Materialia，2018，153：279-289.
[9] ZHU Yuntian，WU Xiaolei. Perspective on hetero-deformation induced (HDI) hardening and back stress[J]. Materials Research Letters，2019，7(10)：393-398.
[10] YANG L，TAO N R，LU L，et al. Enhanced fatigue resistance of Cu with a gradient nanograined surface layer[J]. Scripta Materialia，2013，68(10)：801-804.
[11] KIKUCHI S，NUKUI Y，NAKATSUKA Y，et al. Effect of bimodal harmonic structure on fatigue properties of austenitic stainless steel under axial loading[J]. International Journal of Fatigue，2019，127：222-228.
[12] LIU Yang，JIANG Ping，DUAN Guihua，et al. Investigation on the fatigue crack propagation of medium-entropy alloys with heterogeneous microstructures[J]. Materials，2022，15(17)：6081.
[13] Nelson S，Ladani L，Topping T，et al. Fatigue and monotonic loading crack nucleation and propagation in bimodal grain size aluminum alloy[J]. Acta Materialia，2011，59(9)：3550-3570.
[14] Zhou Hongchang，Liu Zijie，Kikuchi S，et al. Analysis of fatigue performance of austenitic stainless steels with bimodal harmonic structures based on multiscale model simulations[J]. Materials & Design，2023，226：111657.
[15] Wang Peng，Yang Xinhua，Tian Xiaobao. Fracture behavior of precracked nanocrystalline materials with grain size gradients [J]. Journal of Materials Research，2015，30(5)：709-716.
[16] ZHANG Yong，CHEN Hao，JIA Yunfei，et al. A modified kinematic hardening model considering hetero-deformation induced hardening for bimodal structure based on crystal plasticity[J]. International Journal of Mechanical Sciences，2021，191：106068.
[17] Mendes A，Kliauga A M，Ferrante M，et al. How severe plastic deformation at cryogenic temperature affects strength，fatigue，and impact behaviour of grade 2 titanium[C]//IOP Conference Series：Materials Science and Engineering. IOP Publishing，2014，63(1)：012161.
[18] ZHEREBTSOV S，DYAKONOV G，SALEM A，et al. Formation of nanostructures in commercial-purity titanium via cryorolling[J]. Acta Materialia，2013，61(4)：1167-78.
[19] STOLYAROV V，ZEIPPER L，MINGLER B，et al. Influence of post-deformation on CP-Ti processed by equal channel angular pressing[J]. Materials Science and Engineering：A，2008，476(1-2)：98-105.
[20] LIU Jie，LI Fuguo，CHEN Han. Influences of pre-torsion deformation on microstructure and mechanical properties of pure titanium subjected to subsequent tension deformation[J]. Chinese Journal of Aeronautics，2018，31(4)：837-844.
[21] ZHANG Zhe，PAN Hongjiang，MENG Lifang，et al. Mechanical properties of pure titanium processed by cryogenic rolling and annealing[J]. Materials Transactions，2019，60(4)：513-518.
[22] FATTAH-ALHOSSEINI A，KESHAVARZ M K，MAZAHERI Y，et al. Strengthening mechanisms of nano-grained commercial pure titanium processed by accumulative roll bonding[J]. Materials Science and Engineering：A，2017，693：164-169.
[23] WANG Mingsai，WANG Yanfei，HUANG Aihui，et al. Promising tensile and fatigue properties of commercially pure titanium processed by rotary swaging and annealing treatment[J]. Materials，2018，11(11)：2261.
[24] 杨西荣，杨雨欣，刘晓燕，等. 应变比对复合细化超细晶纯钛低周疲劳行为的影响[J]. 稀有金属材料与工程，2020，49(9)：3136-3142. YANG Xirong，YANG Yuxin，LIU Xiaoyan，et al. Effect of strain ratio on low cycle fatigue behavior of ultra-fine grained titanium[J]. Rare Metal Materials and Engineering，2020，49(9)：3136-3142.
[25] ZHANG Zhefeng，GU Haicheng，TAN Xiaoli. Low-cycle fatigue behaviors of commercial-purity titanium[J]. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing，1998，252(1)：85-92.
[26] CHANG Le，MA Tianhao，WEN Jianbin，et al. The distinct influences of pre-strain on low cycle fatigue behavior of CP-Ti along rolling direction at different strain amplitudes[J]. Materials Science and Engineering：A，2019，763：138150.
[27] XUE Peng，WANG Beibei，AN Xianghai，et al. Improved cyclic softening behavior of ultrafine-grained Cu with high microstructural stability[J]. Scripta Materialia，2019，166：10-14.
[28] GABOR P，CANADINC D，MAIER H，et al. The influence of zirconium on the low-cycle fatigue response of ultrafine-grained copper[J]. Metallurgical and Materials Transactions A，2007，38：1916-1925.
[29] MALEKJANI S，HODGSON P D，CIZEK P，et al. Cyclic deformation response of ultrafine pure Al[J]. Acta Materialia，2011，59(13)：5358-5367.
[30] KAPP M W，RENK O，LEITNER T，et al. Cyclically induced grain growth within shear bands investigated in UFG Ni by cyclic high pressure torsion[J]. Journal of Materials Research，2017，32(23)：4317-4326.
[31] LONG Jianzhou，PAN Qingsong，TAO Nairong，et al. Abnormal grain coarsening in cyclically deformed gradient nanograined Cu[J]. Scripta Materialia，2018，145：99-103.
[32] SHAO C，ZHANG Peng，LIU Rui，et al. A remarkable improvement of low-cycle fatigue resistance of high-Mn austenitic TWIP alloys with similar tensile properties：Importance of slip mode[J]. Acta Materialia，2016，118：196-212.
[33] YE Duyi，MATSUOKA S，NAGASHIMA N，et al. The low-cycle fatigue，deformation and final fracture behaviour of an austenitic stainless steel[J]. Materials Science and Engineering：A，2006，415(1-2)：104-117.
[34] RAO K B S，VALSAN M，MANNAN S. Strain-controlled low cycle fatigue behaviour of type 304 stainless steel base material，type 308 stainless stell weld metal and 304-308 stainless steel weldments[J]. Materials Science and Engineering：A，1990，130(1)：67-82.
[35] GURAO N，KAPOOR R，SUWAS S. Deformation behaviour of commercially pure titanium at extreme strain rates[J]. Acta Materialia，2011，59(9)：3431-3446.
[36] ZHANG Zhe，ZHAI Xinyu，CHEN Gang，et al. Enhanced synergy of strength-ductility and low-cycle fatigue resistance of high-entropy alloy through harmonic structure design[J]. Scripta Materialia，2022，213：114591.
[37] BUSSO E P，MCCLINTOCK F A. A dislocation mechanics-based crystallographic model of a B2-type intermetallic alloy[J]. International Journal of Plasticity，1996，12(1)：1-28.
[38] BUSSO E P. Cyclic deformation of monocrystalline nickel aluminide and high temperature coatings[D]. Massachusetts：Massachusetts Institute of Technology，1990.
[39] LI D F，BARRETT R A，O'DONOGHUE P E，et al. A multi-scale crystal plasticity model for cyclic plasticity and low-cycle fatigue in a precipitate-strengthened steel at elevated temperature[J]. Journal of the Mechanics and Physics of Solids，2017，101：44-62.
[40] SPIEGEL M R. Theory and problems of probability and statistics[M]. Singapore：McGraws-Hill Book and Co.，1975.
[41] LI Dongfeng，DAVIES C M，ZHANG Shuyan，et al. The effect of prior deformation on subsequent microplasticity and damage evolution in an austenitic stainless steel at elevated temperature[J]. Acta Materialia，2013，61(10)：3575-3584.
[42] LI S X，CUI G R. Dependence of strength，elongation，and toughness on grain size in metallic structural materials[J]. Journal of Applied Physics，2007，101(8)：54-103.
[43] HU Y M，FLOER W，KRUPP U，et al. Microstructurally short fatigue crack initiation and growth in Ti-6.8Mo-4.5Fe-1.5Al[J]. Materials Science and Engineering A，2000，278(1-2)：170-180.
[44] RHO B S，HONG H U，NAM S W. The effect of δ-ferrite on fatigue cracks in 304L steels[J]. International Journal of Fatigue，2000，22(8)：683-690.
[45] LI Linlin，ZHANG Peng，ZHANG Z J，et al. Effect of crystallographic orientation and grain boundary character on fatigue cracking behaviors of coaxial copper bicrystals[J]. Acta Materialia，2013，61(2)：425-438.
[46] OJA M，CHANDRAN K R，TRYON R. Orientation imaging microscopy of fatigue crack formation in Waspaloy：Crystallographic conditions for crack nucleation[J]. International Journal of Fatigue，2010，32(3)：551-556.
[47] YUAN Guangjian，WANG Runzi，GONG Congyang，et al. Investigations of micro-notch effect on small fatigue crack initiation behaviour in nickel-based alloy GH4169：Experiments and simulations[J]. International Journal of Fatigue，2020，136：105578.
[48] LI H，MASON D，YANG Y，et al. Comparison of the deformation behaviour of commercially pure titanium and Ti-5Al-2.5 Sn (wt.%) at 296 and 728 K[J]. Philosophical Magazine，2013，93(21)：2875-2895.
[49] SINGH V. Effects of prior cold working on low cycle fatigue behavior of stainless steels，titanium alloy timetal 834 and superalloy IN 718：A review[J]. Transactions of the Indian Institute of Metals，2010，63：167-172.