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The Effect of laser surface treatment on the tribological behavior and microstructure of ductile cast iron / Riham Mohamed Samir Hegazy ; Supervised Mahmoud Ghareeb ElSherbiny , Yehia Abd El Hameed Badr , Mohamed Hassan Elshazly

By: Contributor(s): Language: Eng Publication details: Cairo : Riham Mohamed Samir Hegazy , 2005Description: 84P ; ill , diagrs ; 30cmSubject(s): Available additional physical forms:
  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty Of Engineering - Department Of Mechanical Power Engineering Summary: Laser surface hardening is an effective technique to improve the tribological properties of the cast iron componentsExcimer laser was used at different power (24 , 3 , 5 mj) and different number of pulses to treat the surface layer of cylindrical test specimensIt was found that the laser surface treatment increased the hardness of the ductile cast iron sample by 68 , and decreased the friction coefficient and wear loss of the ductile cast iron by 20Small difference between experimental and predicted volumetric wear lossThe microstructural change of the treated samples was also studied , the ferrite pearlite matrix transformed to martensiteThe treated microstructure contains graphite nodules , martensite , and retained austeniteThe hardened depth increased with increasing laser processing parameters
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.11.M.Sc.2005.Ri.E. (Browse shelf(Opens below)) Not for loan 01010110045565000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.11.M.Sc.2005.Ri.E. (Browse shelf(Opens below)) 45565.CD Not for loan 01020110045565000

Thesis (M.Sc.) - Cairo University - Faculty Of Engineering - Department Of Mechanical Power Engineering

Laser surface hardening is an effective technique to improve the tribological properties of the cast iron componentsExcimer laser was used at different power (24 , 3 , 5 mj) and different number of pulses to treat the surface layer of cylindrical test specimensIt was found that the laser surface treatment increased the hardness of the ductile cast iron sample by 68 , and decreased the friction coefficient and wear loss of the ductile cast iron by 20Small difference between experimental and predicted volumetric wear lossThe microstructural change of the treated samples was also studied , the ferrite pearlite matrix transformed to martensiteThe treated microstructure contains graphite nodules , martensite , and retained austeniteThe hardened depth increased with increasing laser processing parameters

Issued also as CD

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