Optimalisasi Waktu Gesek Terhadap Sifat Mekanis dan Struktur Mikro Sambungan Las Metode Friction Welding Bahan Silinder Pejal Logam AISI 1045 dan SS 403

, Tumar and , Ir. Bibit Sugito, MT (2021) Optimalisasi Waktu Gesek Terhadap Sifat Mekanis dan Struktur Mikro Sambungan Las Metode Friction Welding Bahan Silinder Pejal Logam AISI 1045 dan SS 403. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

The traditional welding method used to join different materials is difficult to do because of differences in chemical composition, crystal structure and melting point, but can be done by the solid state welding method, namely the Friction Welding method. Disimilar Friction Welding is the process of joining two metal materials by using heat generated from the change in mechanical energy into heat energy on the surface of the object being rubbed and the metal used has differences in the characteristics of mechanical properties, microstructure, chemical composition and metal melting point. In this research, the material used is steel AISI 1045 and SS 403 because it has properties that can be modified, a little ductile and tough. The welding process was carried out by varying the friction time of 4 seconds, 6 seconds, and 8 seconds. Friction is carried out by means of a 1450 rpm friction welding machine. The tests carried out are tensile strength testing, microstructure testing, and vickers hardness testing. The results of the tensile test show that the tensile strength increases with increasing friction time. The highest tensile strength is obtained from the variation of the friction time of 8 seconds with a value of 343.2 MPa, and the lowest tensile strength at the variation of the friction time of 4 seconds is 293.7 MPa. The hardness test explains that of the three variations of the friction time, the highest hardness value is located around the weld line compared to the HAZ areas and the parent metal. The highest hardness value is in the weld line area with a friction time of 4 seconds of 427.98 VHN, while the lowest hardness value is in the HAZ area of steel with a friction time of 4 seconds of 173.62 VHN. From the microstructure examination, the grain size in the weld metal area is smaller and finer than the HAZ area and the parent material. Of all the variations in the friction time, the appropriate time is 8 seconds.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	AISI 1045 and SS 403, Dissimilar, friction time, tensile strength, microstructure, hardness of vickers
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TN Mining engineering. Metallurgy T Technology > TS Manufactures
Divisions:	Fakultas Teknik > Teknik Mesin
Depositing User:	TUMAR -
Date Deposited:	11 Feb 2021 03:03
Last Modified:	11 Feb 2021 03:03
URI:	http://eprints.ums.ac.id/id/eprint/88874

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