超声滚压静压力对0Cr13Ni5Mo不锈钢残余应力和粗糙度的影响  

Influence of static pressure on residual stress and roughness during ultrasonic rolling for 0Cr13Ni5Mo stainless steel

作　　者：陈云峰 尹丹青[1,2] 倪锋 Chen Yunfeng;Yin Danqing;Ni Feng(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Longmen Laboratory,Luoyang,Henan Province,Luoyang 471023,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]河南省洛阳市龙门实验室,河南洛阳471023

出　　处：《锻压技术》2023年第10期161-168,共8页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(U1904185);河南省青年骨干教师(2020GGJS071)。

摘　　要：为了改善0Cr13Ni5Mo不锈钢的综合性能,采用超声滚压技术对其进行处理,并通过试验和数值模拟的方法研究了不同超声滚压静压力对其残余应力和粗糙度的影响。结果表明:在50~250 N的静压力区间内,残余应力随着静压力的增大而增大,模拟结果与试验结果的误差保持在9%以内;在250 N的静压力下,试验测得最大残余压应力为-579.15 MPa。模拟结果显示:残余应力分布宽度随着静压力的增大而增大,但增长幅度逐渐降低,在250 N的静压力下获得了最大的残余应力分布宽度,为8.5 mm;在50和100 N的静压力下,残余应力深度约为1 mm;在150、200和250 N的静压力下,距表层3 mm处仍然存在残余压应力,为使材料获得较高的残余压应力,同时考虑经济效益,推荐使用150 N的静压力。在50~250 N的静压力区间内,随着静压力的逐渐增大,材料表面粗糙度逐渐降低,在250 N的静压力下材料的表面粗糙度相比较于原表面降低约89%。模拟获得较小粗糙度值的最优静压力参数区间为200~300 N。In order to improve the comprehensive properties of 0Cr13Ni5Mo stainless steel,ultrasonic rolling technology was used to process it,and the influences of different static pressures on its residual stress and roughness during ultrasonic rolling were studied by experiment and nu-merical simulation methods.The results show that in the static pressure range of 50-250 N,the residual stress increases with the increasing of static pressure,and the error between the simulation and test results remains within 9%.Under the static pressure of 250 N,the maximum resid-ual compressive stress measured by the test is-579.15 MPa.The simulation results show that the residual stress distribution width increases with the increasing of static pressure,but the growth rate gradually decreases,and the maximum residual stress distribution width of 8.5 mm is ob-tained under the static pressure of 250 N.Under the static pressure of 50 and 100 N,the residual stress depth is approximately 1 mm.Under the static pressure of 150,200 and 250 N,the residual compressive stress still exists 3 mm away from the surface.Thus,in order to obtain higher residual compressive stress in the material while considering economic benefits,it is recommended to use 150 N static pressure.In the static pressure range of 50-250 N,with the gradual increase of static pressure,the surface roughness of material gradually decreases.Under the static pressure of 250 N,the surface roughness of material decreases by approximately 89%compared to the original surface.The simulation results show that the optimal static pressure parameter range to obtain smaller roughness value is 200-300 N.

关 键 词：超声滚压 静压力 0Cr13Ni5Mo不锈钢 残余应力 表面粗糙度 

分 类 号：TH161[机械工程—机械制造及自动化]