|
|
|
|
Effect of loading rate on fracture behaviour of Mg-Al-Zn alloys
|
|
|
|
|
|
|
|
نویسنده
|
latif n.a. ,sajuri z. ,syarif j. ,miyashita y.
|
|
منبع
|
jurnal teknologi - 2016 - دوره : 78 - شماره : 6-9 - صفحه:83 -89
|
|
چکیده
|
In recent years,magnesium alloys are widely used for automotive applications as structural components due to its lightweight property and high specific strength. in this regards,magnesium alloys are subjected to high velocity and impact loads during accident. hence,understanding the impact and dynamic behaviours of magnesium alloys are essential. in this study,the effect of loading rates on the fracture behaviour of mg-al-zn alloys was investigated using pre-cracked single-edge notched bending (senb) specimens. three-point bending tests were conducted at different loading rates of 5,50 and 500 mm/min. the mg-al-zn alloys that used in the present study were extruded az31 and az61 magnesium alloys. from the load-load line displacement results,both alloys exhibited nonlinear fracture behaviour. the maximum load (pmax) of these two alloys increased with increasing loading rate. comparing both alloys,az61 exhibited higher pmax than that of az31 due to the higher volume of β-phase and smaller grain size in az61. fracture surface observation revealed that both alloys fractured in ductile manner with large scale yielding and high shear lips ratio at all loading rates. © 2016 penerbit utm press. all rights reserved.
|
|
کلیدواژه
|
Ductile; Elastic-plastic fracture; Loading rate; Mg-Al-Zn alloys; Three-point bending
|
|
آدرس
|
department of mechanical and materials engineering,faculty of engineering and built environment,universiti kebangsaan malaysia ukm,bangi,selangor,malaysia,department of engineering mechanics,faculty of mechanical and manufacturing engineering,universiti tun hussein onn malaysia,parit raja,johor, Malaysia, department of mechanical and materials engineering,faculty of engineering and built environment,universiti kebangsaan malaysia ukm,bangi,selangor,malaysia,centre for automotive research,faculty of engineering and built environment,universiti kebangsaan malaysia ukm,bangi,selangor darul ehsan, Malaysia, mechanical engineering department,college of engineering,university of sharjah,po box: 27272,sharjah, United Arab Emirates, department of mechanical engineering,nagaoka university of technology,1603-1,kamitomioka,nagaoka,niigata, Japan
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|