?url_ver=Z39.88-2004&rft_id=1615021026&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+PENAMBAHAN+SERBUK+Cu+PADA+PENGECORAN+ALUMINIUM+PADUAN+TERHADAP+KETANGGUHAN+DAN+TINGKAT+KEKERASAN&rft.creator=NOVIYANSYAH%2C++1615021026&rft.subject=000+Ilmu+komputer%2C+informasi+dan+pekerjaan+umum&rft.description=Sektor+perindustrian+menjadi+sumber+pendapatan+utama+bagi+mayoritas+penduduk+Indonesia.+Semakin+berkembangnya+teknologi+membuat+industri+semakin+pesat+berkembang.+Perindustrian+di+bidang+otomotif+seperti+komponen+kendaraan+bermotor+yang+berbahan+baku+paduan+aluminium+yang+memiliki+manfaat+sebagai+komponen+kendaraan+bermotor+karena+paduan+aluminium+mempunyai++sifat+yang+ringan%2C+tahan+karatt%2C+tahan+suhu+tinggi%2C+kuat%2C+dan+keras.+tujuan+yang+ingin+dicapai+dalam+penelitian+ini%2C+yakni+sebagai+berikut%3A+1.+Mengetahui+pengaruh+penambahan+unsur+serbuk+tembaga+(Cu)+pada+pengecoran+aluminium+paduan+terhadap+nilai+ketangguhan+(impak).+2.+Mengetahui+pengaruh+penambahan+unsur+serbuk+tembaga+(Cu)+pada+pengecoran+aluminium+terhadap+tingkat+nilai+kekerasan.+3.+Mengetahui+hasil+analisa+struktur+mikro+akibat+ketangguhan+impak+penambahan+serbuk+tembaga+(Cu).+Berdasrkan+hasil+penelitian+dan+pembahasan+yang+telah+dipaparkan+di+atas.+Berikut+temuan+penelitian+pada+serbuk+aluminium+paduan.+1.Dari+variasi+paduan+Cu+9%25%2C+12%25+%26+dan+15%25+pada+aluminium+paduan+Al-Cu+setelah+pengujian+impak+tidak+ada+perubahan+peningkatan+pada+nilai+ketangguhan+spesimen+tersebut%2C+yang+terjadi+adalah+penurunan+nilai+ketangguhan.+2.Dari+hasil+pengujian+kekerasan+pada+spesimen+Al+Paduan+dan+spesimen+paduan+Cu+9%25%2C+12%25+dan+15%25+adanya+peningkatan+nilai+kekerasan+akibat+dari+penambahan+serbuk+Cu%2C+semakin+besar+nilai+serbuk+Cu+yang+ditambahkan+maka+semakin+besar+nilai+kekerasan+tersebut.+3.Dari+analisis+struktur+mikro+bahwa+semakin+tinggi+nilai+paduan+Cu+maka+akan+mempermudah+terbentuknya+batas+butir.%0D%0A%0D%0AKata+kunci%3A+Penambahan+serbuk+CU%2C+Pengecoran%2C+Tingkat+Kekerasan%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0A%0D%0AABSTRACT+%0D%0A%0D%0AThe+industrial+sector+is+the+main+source+of+income+for+the+majority+of+Indonesia's+population.+With+the+development+of+technology%2C+the+industry+is+growing+rapidly.+The+automotive+industry%2C+such+as+motor+vehicle+components%2C+are+made+from+aluminum+alloys+which+have+benefits+as+motor+vehicle+components+because+aluminum+alloys+are+lightweight%2C+rust+resistant%2C+high+temperature+resistant%2C+strong+and+hard.+The+objectives+to+be+achieved+in+this+study+are+as+follows%3A+1.+To+determine+the+effect+of+adding+copper+powder+(Cu)+to+casting+aluminum+alloys+on+the+toughness+value+(impact).+2.+Knowing+the+effect+of+adding+copper+powder+(Cu)+to+aluminum+casting+on+the+level+of+hardness.+3.+Knowing+the+results+of+microstructural+analysis+due+to+the+impact+toughness+of+the+addition+of+copper+(Cu)+powder.+Based+on+the+results+of+the+research+and+discussion+described+above.+The+following+are+research+findings+on+aluminum+alloy+powder.+1.+From+variations+of+Cu+alloys+9%25%2C+12%25+%26+and+15%25+in+aluminum+Al-Cu+alloy+after+impact+testing+there+was+no+change+in+the+increase+in+the+toughness+value+of+the+specimen%2C+what+happened+was+a+decrease+in+the+toughness+value.+2.+From+the+results+of+hardness+testing+on+Al+Alloy+specimens+and+9%25%2C+12%25+and+15%25+Cu+alloy+specimens%2C+there+was+an+increase+in+the+hardness+value+due+to+the+addition+of+Cu+powder%2C+the+greater+the+value+of+Cu+powder+added%2C+the+greater+the+hardness+value.+3.+From+the+microstructure+analysis%2C+the+higher+the+value+of+the+Cu+alloy%2C+the+easier+the+formation+of+grain+boundaries+will+be.%0D%0A%0D%0AKeywords%3A+Addition+of+CU+powder%2C+Casting+Hardness+Lev&rft.publisher=FAKULTAS+TEKNIK+&rft.date=2023-06-13&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F72976%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F72976%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F72976%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++NOVIYANSYAH%2C+1615021026++(2023)+PENGARUH+PENAMBAHAN+SERBUK+Cu+PADA+PENGECORAN+ALUMINIUM+PADUAN+TERHADAP+KETANGGUHAN+DAN+TINGKAT+KEKERASAN.++FAKULTAS+TEKNIK+%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F72976%2F