?url_ver=Z39.88-2004&rft_id=1655021003&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=PENGARUH+VARIASI+TEMPERATUR+TEMPERING+TERHADAP+SIFAT%0D%0AMEKANIK+DAN+STRUKTUR+MIKRO+BAJA+AISI+1045+YANG%0D%0ATERSIKULASI%0D%0A&rft.creator=AHMAD+IQBAL+PERDANA%2C+1655021003&rft.subject=600+Teknologi+(ilmu+terapan)&rft.description=Penelitian+ini+bertujuan+untuk+mengetahui+pengaruh+variasi+temperatur+tempering%0D%0Aterhadap+sifat+mekanik+dan+struktur+mikro+Baja+AISI+1045+yang+tersikulasi.%0D%0APenelitian+ini+menggunakan+spesimen+berupa+Baja+AISI+seri+1045+yang+diberikan%0D%0Aperlakuan+panas+850+%0D%0Ao%0D%0AC+selama+60+menit%2C+kemudian+di+quenching+dengan+media%0D%0Apendingin+berupa+air.+Selanjutnya+diberi+perlakuan+panas+kembali+yaitu+tempering%0D%0Adengan+variasi+temperature+yaitu+450+%0D%0AC+dengan+waktu+tahan%0D%0A60+menit.+Kemudian+spesimen+didinginkan+secara+lambat+dengan+suhu+ruangan.%0D%0A%0D%0AHasil+uji+tarik+yang+didapatkan+nilai+kekuatan+tarik+maksimum+sebelum+dilakukan%0D%0Aperlakuan+panas+sebesar+693%2C7+MPa.+Hasil+uji+tarik+setelah+dilakukan+perlakuan%0D%0Apanas+quenching+diperoleh+kekuatan+tarik+maksimum+sebesar+2404%2C3+MPa.%0D%0ASedangkan+hasil+uji+tarik+perlakuan+panas+tempering+dengan+temperature+450+%0D%0Ao%0D%0Ao%0D%0Ao%0D%0AC%2C+550+%0D%0AC%2C+dan+650+%0D%0AC%2C%0D%0A550+%0D%0Ao%0D%0Ao%0D%0A+o%0D%0AC+didapatkan+hasil+kekuatan+tarik+tertinggi+yaitu+pada%0D%0Atemperature+450+%0D%0AC%2C+dan+650%0D%0Ao%0D%0AC+sebesar+1082%2C1+MPa%2C+sedangkan+yang+terendah+yaitu+pada%0D%0Atemperature+650+%0D%0Ao%0D%0AC+sebesar+735%2C8+MPa.+Pengujian+struktur+mikro+hasil+yang%0D%0Adiperoleh+sebelum+dilakukan+perlakuan+panas+struktur+yang+mendominasi+yaitu%0D%0Aferrit+dan+pearlit+Pearlit+dan+ferit+merupakan+fasa+awal+dari+baja+karbon+yang%0D%0Amemiliki+sifat+lunak+dan+keras%2C+keduanya+memiliki+butir+yang+besar+dan+kasar%2C%0D%0Asetelah+dilakukan+perlakuan+panas+muncul+fasa+martensit+dimana+fasa+ini+memiliki%0D%0Asifat+yang+keras%2C+sedangkan+martensit+temper+memiliki+sifat+yang+ulet.%0D%0AKata+kunci%3A+AISI+1045%2C+quenching%2C+tempering%2C+kekuatan+tarik%2C+struktur+mikro+%0D%0AThis+study+aims+to+determine+the+effect+of+variations+in+tempering+temperature+on%0D%0Athe+mechanical+properties+and+microstructure+of+circulating+AISI+1045+steel.+This%0D%0Astudy+used+a+specimen+in+the+form+of+Steel+AISI+1045+series+which+was+given+heat%0D%0Atreatment+at+850+oC+for+60+minutes%2C+then+quenched+with+a+cooling+medium+in+the%0D%0Aform+of+water.+Furthermore%2C+given+heat+treatment+again%2C+namely+tempering+with%0D%0Atemperature+variations+of+450+oC%2C+550+oC%2C+and+650+oC+with+a+holding+time+of+60%0D%0Aminutes.+Then+the+specimen+was+slowly+cooled+to+room+temperature.%0D%0A%0D%0AThe+tensile+test+results+obtained+the+maximum+tensile+strength+value+before+heat%0D%0Atreatment+was+693.7+MPa.+The+results+of+the+tensile+test+after+quenching+heat%0D%0Atreatment+obtained+a+maximum+tensile+strength+of+2404.3+MPa.+While+the+results%0D%0Aof+the+tensile+test+of+tempering+heat+treatment+with+temperatures+of+450+%0D%0Ao%0D%0AC%2C+550+%0D%0Ao%0D%0Ao%0D%0AC%0D%0Aof+1082.1+MPa%2C+while+the+lowest+was+at+a+temperature+of+650+%0D%0AC%2C+and+650+%0D%0AC%2C+the+highest+tensile+strength+results+were+at+a+temperature+of+450+%0D%0Ao%0D%0AC+of+735.8+MPa.%0D%0AMicrostructure+testing+results+obtained+before+heat+treatment+of+the+dominating%0D%0Astructure%2C+namely+ferrite+and+pearlite+Pearlite+and+ferrite+are+the+initial+phase+of%0D%0Acarbon+steel+which+has+soft+and+hard+properties%2C+both+have+large+and+coarse+grains%2C%0D%0Aafter+heat+treatment+a+martensite+phase+appears+where+the+it+is+hard%2C+while%0D%0Atempered+martensite+is+ductile.%0D%0AKeywords+%3A+AISI+1045%2C+quenching%2C+tempering%2C+tensile+strength%2C+micro+structurel+%0D%0Ao&rft.publisher=FAKULTAS+TEKNIK&rft.date=2022-04-01&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F63105%2F1%2F1.%2520ABSTRAK-ABSTRACT.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F63105%2F2%2F2.%2520SKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F63105%2F3%2F3.%2520SKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++AHMAD+IQBAL+PERDANA%2C+1655021003++(2022)+PENGARUH+VARIASI+TEMPERATUR+TEMPERING+TERHADAP+SIFAT+MEKANIK+DAN+STRUKTUR+MIKRO+BAJA+AISI+1045+YANG+TERSIKULASI.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F63105%2F