Open AccessPENGARUH PERBEDAAN LAJU WAKTU PROSES PEMBEKUAN HASIL COR ALUMINIUM 319 DENGAN CETAKAN LOGAM TERHADAP STRUKTUR MIKRO DAN SIFAT MEKANIS
Author(s) -
Errens Lowther,
Sofyan Djamil,
Eddy S Sirdj
Publication year - 2017
Publication title -
poros
Language(s) - English
Resource type - Journals
eISSN - 2442-4501
pISSN - 1410-6841
DOI - 10.24912/poros.v14i1.832
Subject(s) - brinell scale , materials science , metallurgy , aluminium , alloy , ultimate tensile strength , metallography , tensile testing , composite material , microstructure
Abstract: Aluminum alloy is a raw material in industry. Aluminum alloy used is aluminum alloy aluminum alloy 319. Materials were investigated to obtain aluminum alloys that have strong mechanical properties of the difference in the rate of clotting. Research 319 aluminum alloy was investigated by conducting the smelting process in the crank case and printed materials by using metal molds, then do differences in rates of freezing process with an open-air media, media dry sand and wet sand media as a medium deceleration. The next step is testing using tensile testing, testing, hardness with Brinell method, and metallography. From the results, with the help of wet sand media has a hardness of 68 BHN and the UTS 241.89 MPa, for open air medium hardness of 62 BHN and the UTS 224.03 MPa and dry sand media assistance hardness of 54 BHN and the UTS 190.9 MPa.