Cu_(1.2)Cr_(0.6)Zr合金棒热轧变形及其微观组织演变
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摘要
铜铬锆合金产品的性能要求较高,热轧组织与晶粒度控制是关键环节。本文对Cu_(1.2)Cr_(0.6)Zr铜铬锆合金热轧变形过程及其微观组织演变进行了模拟,分析了应力状态对微观组织的变化的影响。对比模拟结果和实验结果,轧后由材料的外表面到轴心处,材料的晶粒度由大到小变化,硬度也由低到高变化;材料在轧制后晶粒得到了细化,材料的综合力学性能得到增强。
With higher requirement of Cu_(1.2)Cr_(0.6)Zr alloy product properties, the Control of microstructure and grain size is very important in hot rolling process. In this paper, the deformation process and microstructure evolution of hot rolled Cu_(1.2)Cr_(0.6)Zr alloy are simulated, and the effect of stress state on microstructure change is analyzed. Then comparing simulation results with experimental results, from rolled rod material outer surface to center, grain size changes from large to small, and the hardness is also from low to high. So rolled material is grain refining, which has excellent comprehensive mechanical properties.
With higher requirement of Cu_(1.2)Cr_(0.6)Zr alloy product properties, the Control of microstructure and grain size is very important in hot rolling process. In this paper, the deformation process and microstructure evolution of hot rolled Cu_(1.2)Cr_(0.6)Zr alloy are simulated, and the effect of stress state on microstructure change is analyzed. Then comparing simulation results with experimental results, from rolled rod material outer surface to center, grain size changes from large to small, and the hardness is also from low to high. So rolled material is grain refining, which has excellent comprehensive mechanical properties.
引文
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[3] 卓海鸥,唐建成,叶楠.高强高导铜合金制备方法的研究热点及发展趋势[J].热加工工艺,2016(3):5-10.
[4] Gong M,Li H,Li T,et al.Evolution of Austenite Grain Size in Continuously Cast Slab during Hot Core Heavy Reduction Rolling Process Based on Hot Compression Tests[J].Steel Research International,2018.
[5] Polyakov A,Gunderov D,Sitdikov V,et al.Physical Simulation of Hot Rolling of Ultra-fine Grained Pure Titanium[J].Metallurgical & Materials Transactions B,2014,45(6):2315-2326.
[6] Wang S Y,Rollett A D.Abnormal Subgrain Growth by Monte Carlo Simulation Based on Hot-Rolled AA5005 Aluminum Alloy Texture[J].Materials Science Forum,2007,550:377-382.
[7] Chen J,Dong F T,Jiang H L,et al.Influence of final rolling temperature on microstructure and mechanical properties in a hot-rolled TWIP steel for cryogenic application[J].Materials Science & Engineering A,2018.
[8] Cisneros J M,Reyes-Osorio L A,Zambrano-Robledo P,et al.Grain Size Effect during Hot Ring Rolling Process Using Nickel-Based Superalloy[M]// Proceedings of the Symposium of Aeronautical and Aerospace Processes,Materials and Industrial Applications.2018:107-117.
[9] Wang Y P,Liu H T,Song H Y,et al.Ultra-thin grain-oriented silicon steel sheet fabricated by a novel way:Twin-roll strip casting and two-stage cold rolling[J].Journal of Magnetism & Magnetic Materials,2018,452:288-296.
[10] Juan-Hua S U,Sun H,Ren F Z,et al.Simulation of microstructure evolution of TA10 titanium alloy based on the Laasraoui-Jonas dislocation density theory[J].Journal of Plasticity Engineering,2018.
[11] Zhang X,Wen Z.Simulation of the Temperature,Microstructure and Mechanical Properties of Cold-Rolled Stainless Steel Sus430 During Continuous Annealing[J].Metal Science & Heat Treatment,2018:1-9.
[12] 蔡飞飞,刘新宽,刘平,等.铜镁合金CuMg0.3棒料连续挤压微观组织演变数值模拟分析[J].锻压技术,2015,40(3).
[13] Devadas C,Samarasekera I V,Hawbolt E B.The thermal and metallurgical state of steel strip during hot rolling:Part III.Microstructural evolution[J].Metallurgical Transactions A,1991,22(2):335-349.
[14] Karhausen K,Kopp R.Model for integrated process and microstructure simulation in hot forming[J].Steel Research,1992,63(6):247-256.
[15] Ding R,Guo Z X,Wilson A.Microstructural evolution of a Ti–6Al–4V alloy during thermomechanical processing[J].Materials Science & Engineering A,2002,327(2):233-245.
[16] 曹鹏,方刚,雷丽萍,等.多晶铜压缩过程中晶粒取向演化的塑性理论分析[J].金属学报,2007,43(9):913-919.
[17] 王星.铜铬和铜铬锆合金组织与性能研究[D].中南大学,2014.
[18] 慕灿,王传斌.轧制和ECAP变形对Cu-Cr-Zr合金显微硬度的影响研究[J].热加工工艺,2014(11):52-53.