Effect of Grain Refinement on Microtexture and Mechanical Properties of Inconel 617 Alloy  

晶粒细化对Inconel 617合金微观织构和力学性能的影响

作　　者：Ji Jinjin Jia Zhi Yang Peiyao Wang Yanjiang Kou Shengzhong 姬金金;贾智;杨佩瑶;汪彦江;寇生中(兰州理工大学材料科学与工程学院,甘肃兰州730050;兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050;兰州工业学院材料工程学院,甘肃兰州730050)

机构地区：[1]School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China [2]State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Lanzhou 730050,China [3]School of Materials Engineering,Lanzhou Institute of Technology,Lanzhou 730050,China

出　　处：《稀有金属材料与工程》2024年第12期3313-3320,共8页Rare Metal Materials and Engineering

基　　金：Natural Science Foundation of Gansu Province(23JRRA922);National Natural Science Foundation of China(52265049);Industrial Support Program for Colleges and Universities in Gansu Province(2022CYZC-26);Key Research and Development Plan Project of Gansu Province(23YFGA0054)。

摘　　要：The microstructure and mechanical properties of Inconel 617 alloy rolled at room temperature with different deformation degrees(20%,50%,70%)were investigated.The grain refinement mechanism and main texture types of Inconel 617 alloy during rolling were analyzed via electron backscatter diffraction and X-ray diffraction,and the microhardness and tensile properties of Inconel 617 alloy with different deformation degrees were tested.Results reveal that the grains of Inconel 617 alloy are refined during the rolling deformation process,and the refinement mechanism is the fragmentation of original grains caused by the increase in dislocation density and strain gradient.The main microtextures of the rolled samples are Goss{011}<001>,Rotated Goss{110}<110>,Brass{011}<211>,and P{011}<112>textures,and their intensity is increased with increase in deformation degree.After rolling deformation,the strength of the Inconel 617 alloy is improved and the ductility is reduced by the combined effect of grain refinement and dislocation strengthening.Comprehensively,the yield strength and elongation of Inconel 617 alloy after 20%deformation are 772.48 MPa and 0.1962,respectively,presenting good synergy effect.研究了室温轧制后不同变形量(20%、50%、70%)下的Inconel 617合金微观组织特征和力学性能变化。采用电子背散射衍射、X射线衍射分析了轧制过程中Inconel 617合金的晶粒细化机制和主要织构种类,并且对不同变形量下的Inconel 617合金的显微硬度和拉伸性能进行了测试。结果表明:在轧制变形过程中,Inconel 617合金晶粒发生细化,细化的机制是位错密度和应变梯度增大导致的原有晶粒破碎。轧制试样主要织构为高斯{011}<001>、旋转高斯{110}<110>、黄铜{011}<211>和P织构{011}<112>,并且随着变形程度的增大,剪切织构逐渐增强。轧制变形后,晶粒细化和位错强化共同提高了Inconel 617合金的强度,降低了塑性。综合来看,在20%的变形量时,Inconel 617合金的屈服强度和韧性分别为772.48 MPa和0.1962,具有较好的协同效果。

关 键 词：Inconel 617 alloy grain refinement MICROTEXTURE MICROHARDNESS tensile properties 

分 类 号：TG132.3[一般工业技术—材料科学与工程]