刘柏,王宁,朱金龙,郝世奇,张显程.TC4合金在不同表面强化状态下的微动磨损性能研究[J].表面技术,2022,51(7):127-140.
LIU Bai,WANG Ning,ZHU Jin-long,HAO Shi-qi,ZHANG Xian-cheng.Fretting Wear Properties of TC4 Alloy under Different Surface Strengthening States[J].Surface Technology,2022,51(7):127-140 |
| TC4合金在不同表面强化状态下的微动磨损性能研究 |
| Fretting Wear Properties of TC4 Alloy under Different Surface Strengthening States |
| |
| DOI：10.16490/j.cnki.issn.1001-3660.2022.07.012 |
| 中文关键词: 表面强化 微动磨损 残余应力场 塑性应变场 UMESHMOTION子程序 |
| 英文关键词:surface strengthening fretting wear residual stress field plastic strain field UMESHMOTION subroutine |
| 基金项目:国家重点研发项目(2018YFC1902400);上海市自然科学基金项目(20ZR1415300) |
|
|
| Author | Institution |
| LIU Bai | Key Laboratory of Pressurized System and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China |
| WANG Ning | Key Laboratory of Pressurized System and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China |
| ZHU Jin-long | Key Laboratory of Pressurized System and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China |
| HAO Shi-qi | Key Laboratory of Pressurized System and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China |
| ZHANG Xian-cheng | Key Laboratory of Pressurized System and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 研究喷丸(SP)及表面超声滚压(USRP)强化后摩擦系数、残余应力场及塑性应变场对TC4合金微动磨损性能的影响。方法 分别对TC4合金表面进行SP及USRP强化处理，通过试验测得强化前后的表面粗糙度、残余应力以及显微硬度。基于改进的Archard磨损方程，在ABAQUS有限元软件中建立微动磨损的二维柱面/平面接触模型，借助ABAQUS中的子程序SIGINI和HARDINI分别将残余应力场、塑性应变场引入到表征微动磨损的UMESHMOTION子程序中，从而探究表面强化后摩擦系数、残余应力场以及塑性应变场对平面微动磨损性能的影响。结果 原试样经SP强化后，表面粗糙度增加，而经USRP强化后，表面粗糙度得以改善。经SP和USRP强化后，试样的显微硬度分别为原试样的1.28倍和1.23倍。TC4合金经USRP处理后，最大残余应力为–550 MPa，而SP处理后为–380 MPa。引入残余应力场后，试样的磨损深度明显减少，相比原试样，USRP、SP试样的磨损深度分别降低15%、10%。引入塑性应变场后，TC4合金的磨损深度降低了约6%。结论 相同载荷条件下，摩擦系数越大，磨损越严重。磨损轮廓会随着摩擦系数的增大而逐渐往外侧偏移，接触中心区域的磨损深度也随着摩擦系数的增大而越来越深。塑性形变行为会随着摩擦系数的增加而变得明显，且最终会使得塑性变形的区域变得越来越大。引入残余应力场和塑性应变场后，磨损量均会减小，残余应力的影响更为显著。通过微动疲劳试验发现，加入微动磨损作用后，试样寿命显著降低，USRP试样的抗磨损性能最显著。 |
| 英文摘要: |
| The work aimed to study the effect of friction coefficient, residual stress field and plastic strain field on the fretting wear properties of TC4 alloy after shot peening (SP) and ultrasonic surface rolling process (USRP) strengthening. The surface of TC4 alloy was strengthened by SP and USRP respectively. After strengthening, the surface roughness, residual stress and microhardness of the TC4 alloy were measured by experiments. Based on the improved Archard wear equation, a two-dimensional cylindrical/planar contact model of fretting wear was established in the ABAQUS finite element software. With the help of the subroutines SIGINI and HARDINI in ABAQUS, the residual stress field and the plastic strain field were respectively introduced into the UMESHMOTION subroutine, so as to explore the effect of friction coefficient, residual stress field and plastic strain field on the surface fretting wear performance after surface strengthening. It was found that the surface roughness of the original specimen increased after SP, but improved after USRP; The microhardness of the specimen after SP and USRP strengthening was 1.28 times and 1.23 times of the original specimen, respectively. The maximum residual stress of TC4 alloy after USRP is –550 MPa, and after SP is –380 MPa. After introducing the residue stress field, the wear depth of the specimen was significantly reduced. Compared with the original specimen, the wear depth of the USRP and SP specimens were reduced by 15% and 10% respectively. After the introduction of the plastic strain field, the wear depth of the TC4 alloy is reduced about 6%. It can be concluded that the greater the friction coefficient, the more severe the wear under the same conditions. The wear profile gradually shifts to the outside with the increase of the friction coefficient, and the wear depth in the contact center area also becomes deeper and deeper with the increase of the friction coefficient. The plastic deformation behavior becomes more obvious with the increase of the friction coefficient and eventually makes the area of plastic deformation become larger and larger. With the introducing of residual stress field and plastic strain field, the amount of wear is reduced, and the influence of the residual stress is more significant. Through the fretting fatigue test, it is found that the life of the specimen is significantly reduced after the fretting wear is added, and the USRP specimen has the best anti-wear performance. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501715号