Observation of dislocations created by friction on aluminium thin foils

Andarelli, G.; Maugis, D.; Courtel, R.

doi:10.1016/0043-1648(73)90037-9

Cited by 28 publications

(13 citation statements)

References 5 publications

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“…strength." In the authors' opinion, it is rather an effect of rcclucing the cffec~ive load P , , as preclictecl in (2). T h e use of tlic Traube's la\v fhr h o m o l o g o~~s aliphatic series, shoulcl give very instl-uctive results.…”

Section: Discussionmentioning

confidence: 88%

“…T h e r e are four points to be interpreted: ( I ) the value o f the plateau, (2) the statistical distribution o f F values, (3) the value of the critical load PC, (4) the slope o f the curve above this critical valt~e. …”

Section: Adhesion Measurementsmentioning

confidence: 99%

“…T h i s behavior reflects t h e anisotropic plasticity o f crystals d u e t o t h e fact that dislocations glide in well-definecl slip planes. In orcler t o study friction a t t h e scale o f these clislocations, t h e a~~t h o r s had cal-ried o u t experiments with small glass fiber (radius I 5 p m ) sliding o n a l u m i n u m thin foils, which were later observed by transmission electron microscopy (1)- (2). F r o m t h e observed dislocation density, ancl assuming that t h e frictional energy is stored as elastic energy in clislocations, t h e a u t h o r s h a d attempted t h e calculation o f t h e friction coefficient (2): t h e obtainecl value was lower t h a n t h e macroscopic value by two o r d e r s o f magnitude.…”

Section: Introductionmentioning

confidence: 99%

“…In orcler t o study friction a t t h e scale o f these clislocations, t h e a~~t h o r s had cal-ried o u t experiments with small glass fiber (radius I 5 p m ) sliding o n a l u m i n u m thin foils, which were later observed by transmission electron microscopy (1)- (2). F r o m t h e observed dislocation density, ancl assuming that t h e frictional energy is stored as elastic energy in clislocations, t h e a u t h o r s h a d attempted t h e calculation o f t h e friction coefficient (2): t h e obtainecl value was lower t h a n t h e macroscopic value by two o r d e r s o f magnitude. In fact, it was n o t realized a t that time that t h e major p a r t o f frictional energy is dissipated as heat, a n d that elastic energy stored in dislocations is only a few percent o f t h e e x p e n d e d work.…”

Section: Introductionmentioning

confidence: 99%

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Adhesion and Friction on Al Thin Foils Related to Observed Dislocation Density

Maugis

Desalos-Andarelli

Heurtel

et al. 1978

A S L E Transactions

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Equipe d e Recherche d e M k c a~n i q l~e d e s Surfaces. C.N.K.S. 92 l!)O M e u d o n , FranceAdlrrsiorz n~z d ,fiictiotz of a ,fine tip on 4,500 nlrcmirz~tr~z ,foils under lond varying betrueen 1 p N and 200 p N in a n elecfro11 nzirroscopr rurrr strtdied. W l~c n dislocntion drnsity i~ loru (I nd irrzpnct occros ,Fir , fiorn ( 1 1 1~ pr~-rxistjng dislocntion, .snrrtll (,lnstic (~d111~~siotl i.s oO.se~v~d ( I S long (is tl~rorrticnl strongtll is not r~( t r I~r d . 11' tlris i n z f~~c l orcro:~ i n tho inzmdintr vicinity of (I clisIocrrtion, tlri~ro i s /)lt.stic dc;formotio?z cr,nd (~d h~s i o n is Ilig11. Tho rcsrrlt is N strttisticnl onr, rtnd (1 hitnodal hi.stog,nm is obtnined. Wllr~rz lorrd irrcrrasi~.~, pl(r.s!ir /~robrthility and its ~I ( L / I ( P ~~C W ( I S P . A rnudel, arr~phnsizi~zg thr rolo i f .s,ryficr onerg)' is proposrd; it olloro~.s thr irzlorprrtation of tlrc his11 strrngth brhaz~ior of corztrtnzincited n~rz?zenled szc~faces, and of somr of B~tckley's resztlts,for ndl~esion. k I % o~ (1 t~r r g~~~t i ( 1 1 disl~lrcetnr~zt is i m p o s d , co~(fficir,tt of,fiiction i s rz~nrly z~r o ot .snrttll locr[ls. TI10 co(;fftcirnt ?[frictiorl ~llnrply irzcrm.ses cibour~ (I cr~rtnin cr-iticnl loctd (rul~ich d?prnd.s on thr itzitir~l disloccition d~rzsity). It still incr~nsrs r7oith load until its mncroscopic v n l r i~ is rclncllc~d. B y conzpnrison roith tensilr lrsts, m r r a

show abstract

Section: Discussionmentioning

confidence: 88%

Section: Adhesion Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adhesion and Friction on Al Thin Foils Related to Observed Dislocation Density

Maugis

Desalos-Andarelli

Heurtel

et al. 1978

A S L E Transactions

Self Cite

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“…The results of experimental research, the established empirical dependences of the macroscopic parameters of friction and wear on the parameters of the structure of the materials [2][3][4][5][6][7][8][9][10], and the generalizations of data made in [11 - 14] give grounds to assume that the parameters of the Institute of Mechanical Engineering, Moscow, Russia. crystal structure 13 (the physical broadening of the diffraction lines) and a (the period of the crystal lattice) can be considered as physical criteria of the wear resistance of metallic materials under various friction conditions.…”

Section: Introductionmentioning

confidence: 99%