NEAR-SURFACE MICROSTRUCTURES DEVELOPING UNDER LARGE SLIDING LOADS

被引:67
作者
HUGHES, DA
DAWSON, DB
KORELLIS, JS
WEINGARTEN, LI
机构
[1] Sandia Natl Lab, Livermore, United States
关键词
CONTACT MECHANICS; COPPER; DEFORMATION; DISLOCATION STRUCTURE; FRICTION; WEAR; GRAIN REFINEMENT; METALS; MICROSTRUCTURE; RECRYSTALLIZATION; STRAIN-HARDENING; TRIBOLOGY;
D O I
10.1007/BF02645312
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The subsurface zones of copper developed during the application of large sliding loads were observed using TEM and SEM, Differences in microstructural development as a function of load and sliding velocity are assessed, The observed microstructural changes, such as the development of a dislocation substructure and a mechanically mixed layer, are used to estimate the stress and strain-state of the near surface zone during sliding, These estimates of local stress and strain were compared to the applied stresses to show that large stress concentrations develop at and below a sliding interface, Thus, the stresses which develop locally within the near surface zone can be many times larger than those predicted from the applied load and the friction coefficient, It is postdated that these stress concentrations arise from two sources: 1) asperity interactions and 2) local and momentary bonding between the two surfaces, These results are compared to various friction models.
引用
收藏
页码:459 / 475
页数:17
相关论文
共 48 条
[1]  
ABILDGAARD T, 1982, 2ND P CAIR U MECH DE, P521
[2]  
ALANI R, 1992, FEB P ACEM 12 ANZSCB
[3]  
ALBERDI J, 1984, THESIS U NAVARRA FAC
[4]   CELL AND BAND STRUCTURES IN COLD-ROLLED POLYCRYSTALLINE COPPER [J].
ANANTHAN, VS ;
LEFFERS, T ;
HANSEN, N .
MATERIALS SCIENCE AND TECHNOLOGY, 1991, 7 (12) :1069-1075
[5]  
[Anonymous], 2001, FRICTION LUBRICATION
[6]   ANALYTICAL DETERMINATION OF FRICTION RESISTANCE AS A FUNCTION OF NORMAL LOAD AND GEOMETRY OF SURFACE IRREGULARITIES [J].
AVITZUR, B ;
NAKAMURA, Y .
WEAR, 1986, 107 (04) :367-383
[7]   A FRICTION MODEL BASED ON THE UPPER-BOUND APPROACH TO THE RIDGE AND SUBLAYER DEFORMATIONS [J].
AVITZUR, B ;
HUANG, CK ;
ZHU, YD .
WEAR, 1984, 95 (01) :59-77
[8]   OVERVIEW NO-96 - EVOLUTION OF FCC DEFORMATION STRUCTURES IN POLYSLIP [J].
BAY, B ;
HANSEN, N ;
HUGHES, DA ;
KUHLMANNWILSDORF, D .
ACTA METALLURGICA ET MATERIALIA, 1992, 40 (02) :205-219
[9]   DEFORMATION STRUCTURES IN LIGHTLY ROLLED PURE ALUMINUM [J].
BAY, B ;
HANSEN, N ;
KUHLMANNWILSDORF, D .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1989, 113 :385-397
[10]   MICROSTRUCTURAL EVOLUTION IN ROLLED ALUMINUM [J].
BAY, B ;
HANSEN, N ;
KUHLMANNWILSDORF, D .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1992, 158 (02) :139-146