04278ntm a2200385 i 4500952014100000952012400141999001700265003000800282005001700290006001900307008004100326020003200367040002300399090002900422100006400451245017600515264003400691264001200725300007100737336002100808336002100829337002500850337002300875338002300898338003000921347002400951500006800975502007001043504004001113520258401153610008303737650004503820650001103865942001603876  00102lcc40708REFa20000b20000cREFd2021-01-19l0oFTKPM .D56 2020 r ThesispT000001367r2022-05-09 00:00:00t1w2021-01-19yTHESIS  00102lcc40708REFa20000b20000cREFd2022-03-03l0oCD12850pT000001368r2022-03-03 00:00:00t1w2022-03-03yTHESIS  c95375d95381MY-KuUP20251125105843.0t||||fr|||| 000 0 220303s2020    my a|||fr|||| 000 0 eng d  aTHE0009131(Local)qhardback  aUMPbengcUMPerda  aFTKPM .D56 2020 r Thesis1 aChe Dini Marini Che Mohammad Ishkandar El-Rahimin,eauthor.10aInvestigation of surface metal matrix composites of reinforced aluminium alloy produced using friction stir processing /cChe Dini Marini Che Mohammad Ishkandar El-Rahimin 1aKuantan, Pahang :bUMP,c2020 4c© 2020  axiii, 99 pages :billustrations (some color) ;c30 cm. +e1 CD ROM  atext2rdacontent  atext2rdacontent  aunmediated2rdamedia  acomputer2rdamedia  avolume2rdacarrier  acomputer disc2rdacarrier  atext filebPDF2rda  aFaculty of Manufacturing and Mechatronic Engineering Technology  aThesis (Master of Science) -- Universiti Malaysia Pahang – 2020  aIncludes bibliographical references3 aAluminium  alloy  demonstrates  promising  excellent  properties  in  many  applications.  However,  aluminium  alloy  exhibits  poor  tribological  behaviour  in  some  extends.  Studies have developed for surface modifications of aluminium alloy in order to alter  the  surface  properties  while  maintaining  the  properties  of  the  core.  Fusion  route  and  casting methods have been developed to improve the surface properties  of aluminium  alloy. However, these methods deal with high temperatures that lead to poor wettability  of ceramic particle during the process. This research is aimed to investigate the surface  modification  of  aluminium  alloy,  AA6061  using  friction  stir  processing  (FSP).  The  surface  modification  of  was  done  on  non-reinforced  aluminium  alloy  and  reinforced  aluminium alloy, namely FSPed AA6061 and FSPed AA6061/RHA, respectively. Rice  husk ash (RHA) was used as reinforced material with composition of 6 vol.% . RHA is  a ceramic particle which contains high level of silica (SiO2). In this research, FSP was  performed at a constant travel speed of 25 mm/min and different rotation speeds were  varied at 1000, 1200, 1400, 1500 and 1600 rpm using a probe cylindrical tool. FSP was  used  as  an  approach  to  refine  and  enhance  the  mechanical  properties  and  the  tribological  behaviour  of  AA6061.  A  microscopic  examination  was  done  using  an  optical microscope (OM) and revealed that FSP refined the grain size and the reinforced  material is successfully held within the alloy. The mechanical properties of the alloys  particularly the microhardness, were tested and compared. The average microhardness  value  decreased  as  the  FSP  rotational  speed  recorded  for  both  FSPed  AA6061  and  FSPed  AA6061/RHA  were  increased.  However,  by  using  FSP,  the  mechanical  properties  of  FSPed  AA6061  and  FSPed  AA6061/RHA  have  improved  compared  to  AA6061. This significance was due to grain refinement of AA6061 and the presence of  RHA within the  AA6061.  It was found  that  wear  behaviour  has  improved  for  FSPed  AA6061/RHA  compared  to  FSPed  AA6061  followed  by  AA6061.  Meanwhile,  observation  under  a  scanning  electron  microscope  (SEM)  has  found  that  the  wear  mechanism changed from adhesive wear to abrasive wear. Furthermore,  based on the  energy-dispersive X-ray spectroscopy (EDX) remark, the presence of RHA within the  AA6061  proved  that  RHA  helps  to  improve  the  mechanical  and  wear  behaviour  of  FSPed AA6061 followed by AA6061 itself.20aFaculty of Manufacturing and Mechatronic Engineering TechnologyxDissertations 0aUniversities and collegesxDissertations 0aTheses  2lcccTHESIS