15 research outputs found
Mechanical Properties of Dissimilar A356/SAPH440 Lap Joints by the Friction Stir Spot Welding and Self-Piercing Riveting
Aluminum alloy A356-T6 and automotive steel sheet SAPH440 were joined using friction stir spot welding and self-piercing riveting. The maximum tensile shear strength values in weld joints were approximately 3.5 kN at a rotation speed of 500 rpm and plunge depth of 1.0 mm. It was confirmed that the intermetallic compound layer of weld joints below 9.23 m did not exceed the permissible thickness 10 m of AlβFe joints. The self-piercing riveting joints exhibited maximum tensile- shear strength of 7.9 kN, which was higher than that of the weld joints. However, during the riveting process, cracking appeared in the joint on the aluminum side, which was caused by lack of ductility of cast aluminum. In addition, it was observed that the cracks on the aluminum side were getting larger, as the radius of the lower mold increased.ΠΠ»ΡΠΌΠΈΠ½ΠΈΠ΅Π²ΡΠΉ ΡΠΏΠ»Π°Π² Π356-Π’6 ΠΈ Π°Π²ΡΠΎΠΌΠΎΠ±ΠΈΠ»ΡΠ½ΡΡ Π»ΠΈΡΡΠΎΠ²ΡΡ ΡΡΠ°Π»Ρ SAPH440 ΡΠΎΠ΅Π΄ΠΈΠ½ΡΠ»ΠΈ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΡΠΎΡΠ΅ΡΠ½ΠΎΠΉ ΡΠΎΡΠ°ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΠ²Π°ΡΠΊΠΈ ΡΡΠ΅Π½ΠΈΠ΅ΠΌ ΠΈ ΡΠ°ΠΌΠΎΠΏΡΠΎΠ±ΠΈΠ²Π½ΠΎΠΉ ΠΊΠ»Π΅ΠΏΠΊΠΈ. ΠΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΡΠΉ ΠΏΡΠ΅Π΄Π΅Π» ΠΏΡΠΎΡΠ½ΠΎΡΡΠΈ Π½Π° ΡΠ΄Π²ΠΈΠ³ ΠΏΡΠΈ ΡΠ°ΡΡΡΠΆΠ΅Π½ΠΈΠΈ Π΄Π»Ρ ΡΠ²Π°ΡΠ½ΡΡ
ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠΉ ΡΠΎΡΡΠ°Π²Π»ΡΠ» ΠΏΡΠΈΠΌΠ΅ΡΠ½ΠΎ 3,5 ΠΊΠ ΠΏΡΠΈ ΡΠΊΠΎΡΠΎΡΡΠΈ Π²ΡΠ°ΡΠ΅Π½ΠΈΡ 500 ΠΎΠ±/ΠΌΠΈΠ½ ΠΈ Π³Π»ΡΠ±ΠΈΠ½Π΅ ΠΏΡΠΎΠ½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ 1,0 ΠΌΠΌ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ ΡΠ»ΠΎΠΉ ΠΈΠ½ΡΠ΅ΡΠΌΠ΅ΡΠ°Π»Π»ΠΈΠ΄ΠΎΠ² ΡΠ²Π°ΡΠ½ΡΡ
ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠΉ ΡΠΎΠ»ΡΠΈΠ½ΠΎΠΉ ΠΌΠ΅Π½Π΅Π΅ 9,23 ΠΌΠΊΠΌ Π½Π΅ ΠΏΡΠ΅Π²ΡΡΠ°Π» Π΄ΠΎΠΏΡΡΡΠΈΠΌΡΠΉ ΡΡΠΎΠ²Π΅Π½Ρ Π² 10 ΠΌΠΊΠΌ Π΄Π»Ρ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠΉ AlβFe. ΠΠ»Π΅ΠΏΠ°Π½ΡΠ΅ ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΡ ΠΈΠΌΠ΅Π»ΠΈ ΠΏΡΠ΅Π΄Π΅Π» ΠΏΡΠΎΡΠ½ΠΎΡΡΠΈ 7,9 ΠΊΠ Π² ΠΎΡΠ»ΠΈΡΠΈΠ΅ ΠΎΡ ΡΠ²Π°ΡΠ½ΡΡ
ΡΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠΉ. ΠΠ΄Π½Π°ΠΊΠΎ ΠΏΡΠΈ ΠΊΠ»Π΅ΠΏΠΊΠ΅ Π½Π° Π°Π»ΡΠΌΠΈΠ½ΠΈΠΈ ΠΏΠΎΡΠ²Π»ΡΠ»ΠΈΡΡ ΡΡΠ΅ΡΠΈΠ½Ρ Π²Π²ΠΈΠ΄Ρ Π½ΠΈΠ·ΠΊΠΎΠΉ ΠΏΠ»Π°ΡΡΠΈΡΠ½ΠΎΡΡΠΈ Π»ΠΈΡΠΎΠ³ΠΎ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π°, ΠΏΡΠΈ ΡΡΠΎΠΌ ΡΡΠ΅ΡΠΈΠ½Ρ ΠΏΠΎΠ΄ΡΠ°ΡΡΠ°Π»ΠΈ ΠΏΠΎ ΠΌΠ΅ΡΠ΅ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ ΡΠ°Π΄ΠΈΡΡΠ° Π½ΠΈΠΆΠ½Π΅ΠΉ ΡΠΎΡΠΌΡ