Material Teknik

Buku Pustaka ,[object Object],[object Object],[object Object],[object Object]

Pokok Bahasan ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Material ,[object Object],[object Object],[object Object]

Jenis Material ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Struktur dan Ikatan Atom Material Teknik

Pendahuluan ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Konfiguration elektron unsur *Note Irregularity No. Element K L M N O P Q 1 2 3 4 5 6 7 s s p s p d s p d f s p d f s p d f s 1 H 1 2 He 2 3 Li 2 1 4 Be 2 2 5 B 2 2 1 6 C 2 2 2 7 N 2 2 3 8 O 2 2 4 9 F 2 2 5 10 Ne 2 2 6 11 Na 2 2 6 1 12 Mg 2 2 6 2 13 Al 2 2 6 2 1 14 Si 2 2 6 2 2 15 P 2 2 6 2 3 16 S 2 2 6 2 4 17 Cl 2 2 6 2 5 18 Ar 2 2 6 2 6 19 K 2 2 6 2 6 - 1 20 Ca 2 2 6 2 6 - 2 21 Sc 2 2 6 2 6 1 2 22 Ti 2 2 6 2 6 2 2 23 V 2 2 6 2 6 3 2 24 Cr 2 2 6 2 6 5* 1 25 Mn 2 2 6 2 6 5 2 26 Fe 2 2 6 2 6 6 2 27 Co 2 2 6 2 6 7 2 28 Ni 2 2 6 2 6 8 2 29 Cu 2 2 6 2 6 10 1* 30 Zn 2 2 6 2 6 10 2 31 Ga 2 2 6 2 6 10 2 1 32 Ge 2 2 6 2 6 10 2 2 33 As 2 2 6 2 6 10 2 3 34 Se 2 2 6 2 6 10 2 4 35 Br 2 2 6 2 6 10 2 5 36 Kr 2 2 6 2 6 10 2 6

Bilangan Koordinasi utk Ikatan Atom

Struktur dan Cacat Kristal Material Teknik

Pendahuluan ,[object Object],[object Object],[object Object],[object Object],[object Object],y z b a c    x

Sistem Kristal Parameter kisi diklasifikasikan dalam tujuh sistem kristal dan empat belas kisi kristal ,[object Object],[object Object],[object Object],[100] b a c x [111] [110] z y

Menentukan Indeks Miller Arah Kristal ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],c y b a x Proyeksi pd sb y: b z Proyeksi pd sb x: a/2

Bidang Kristal ,[object Object],[object Object],b a c x Bid (110) mengacu titik asal O Bid. (110) ekivalen z y b a c x Bid (111) mengacu titik asal O Bid. (111) ekivalen z y

Menentukan Indeks Miller Bidang Kristal ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],c y b a x z bid.(012) z’ x’

Kristal Kubik Berpusat Muka ,[object Object],[object Object]

Kristal Heksagonal Tumpukan Padat

Cacat Kristal ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sifat Mekanik ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Material Gaya/beban

Sifat mekanik ,[object Object],[object Object],[object Object],[object Object]

Sifat Mekanik ,[object Object],[object Object],[object Object],[object Object],[object Object]

Konsep tegangan (stress) dan regangan (strain) ,[object Object],[object Object],[object Object],[object Object],F F F F Beban tarik Beban kompressi F F Beban geser

Uji tarik Standar sampel untuk uji tarik ,[object Object],[object Object],[object Object],2¼’ 2’  ¾’  0,505’ R 3/8’

Deformasi elastis ,[object Object],Teg. Reg. Modulus elastis Pembebanan Beban dihilangkan

Mesin uji tarik (Tensile Test)

Deformasi elastis ,[object Object],[object Object],[object Object]

0,28 16,0 40,7 W 0,36 4,5 10,7 Ti 0,27 8,3 20,7 Baja 0,31 7,6 20,7 Ni 0,29 1,7 4,5 Mg 0,35 4,6 11,0 Cu 0,35 3,7 10,1 Cu-Zn 0,33 2,6 6,9 Al Ratio Poisson Modulus geser (104 MPa) Modulus elastis (104 MPa) Paduan logam

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sifat elastis material ,[object Object],[object Object], Z  Z z x y

 =  x /  y ,[object Object],[object Object],[object Object],[object Object],[object Object]

Deformasi plastis ,[object Object],[object Object],Teg. Teg. Reg. Reg.  ys  ys Titik luluh atas Titik Luluh bawah 0,002

Deformasi elastis ,[object Object],[object Object]

Perilaku uji tarik ,[object Object],[object Object],[object Object]

Keuletan (ductility) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Ketangguan (Toughness) ,[object Object],[object Object],[object Object],Teg. Reg. A B B’ C C’

35 655 565 Mo 30 330 240 Ti 40 480 138 Ni 45 262 130 Fe 45 200 69 Cu 45 69 28 Al 45 130 - Au Keuletan %El. Kekuatan tarik (MPa) Kekuatan luluh (MPa) Logam

Tegangan dan regangan sebenarnya ,[object Object],[object Object],[object Object],[object Object],[object Object],Teg. Reg. teknik sebenarnya

Bila volum sampel uji tidak berubah, maka A i l i = A o l o ,[object Object],[object Object],[object Object],[object Object]

Pendahuluan ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object]

Diagram Cu-Ni ,[object Object],[object Object]

Sistem binary eutektik ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A B C E F G H

Diagram Fasa Pb-Sn ,[object Object],[object Object]

Diagram Fasa Fe-Fe 3 C ,[object Object],[object Object],[object Object],[object Object],[object Object]

Reaksi pada Diagram Fasa Fe-C ,[object Object],[object Object],[object Object],[object Object],[object Object]

Pengaruh unsur pada Suhu Eutektoid dan Komposisi Eutektoid ,[object Object],[object Object]

Diagram Fasa Al-Si ,[object Object],[object Object],[object Object]

Proses Anil & Perlakuan Panas Material Teknik

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Anil Sempurna ,[object Object],[object Object],[object Object],[object Object],   +Fe 3 C 700 800 900  C 0,77%C anil normalisasi

Speroidisasi ,[object Object],[object Object],[object Object],[object Object]

Laku Mampu Tempa (Malleabilisasi) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Normalisasi terdiri dari homogenisasi dan normalisasi ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Recovery, Rekristalisasi, Pertumbuhan Butir

Proses Presipitasi ,[object Object]

Diagram Transformasi-Isotermal

Diagram Transformasi-Isotermal untuk Baja Eutektoid

Logam besi ,[object Object],[object Object],[object Object],[object Object],[object Object]

Baja karbon ,[object Object],[object Object],[object Object],[object Object]

Klasifikasi baja menurut AISI & SAE

Baja seri 1045 utk yoke ball ,[object Object],[object Object]

Baja Paduan ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Baja paduan rendah berkekuatan tinggi Cth. 50XF 50  kekuatan luluh 50x103 Psi X  paduan rendah F  kill + kontrol S 970 140 830 120 690 100 550 80 485 70 415 60 350 50 310 45 275 40 F = kill + kontrol S K = kill O = bukan kill S = kualitas struktur X = paduan rendah W = weathering D = fasa ganda 240 35 MPa 10 3 Psi Deoksidasi Komposis kimia Kekuatan luluh

Baja tahan karat ,[object Object],[object Object]

Jenis baja tahan karat ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Jenis baja tahan karat ,[object Object],[object Object],[object Object]

Besi cor ,[object Object],[object Object]

Jenis besi cor ,[object Object],[object Object],[object Object],[object Object]

Besi cor kelabu ,[object Object],[object Object]

Besi cor nodular (ulet) ,[object Object],[object Object],[object Object]

Besi cor putih ,[object Object],[object Object],[object Object]

Besi cor malleable ,[object Object],[object Object]

Logam Bukan Besi Material Teknik

Pendahuluan ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Alimunium Produk Wrough Al+unsur lain 8xxx Al+Zn 7xxx Al+Mg+Si 6xxx Al+Mg 5xxx Al+Si 4xxx Al+Mn 3xxx Al+Cu 2xxx Al murni: 99,00% 1xxx

Alimunium Produk Cor Al+Pb 8xx.x Al+Zn 7xx.x Tidak digunakan 6xx.x Al+Mg 5xx.x Al+Si 4xx.x Al+Si, Cu, Mg 3xx.x Al+Cu 2xx.x Al murni: 99,00% 1xx.x

Perlakuan utk produk aluminium wrough dan cor Perlakuan panas T Pengerjaan regangan melalui pengerjaan dingin (utk produk wrough) H Proses anil (hasil pengerjaan dingin atau panas atau cor) O Hasil pabrikasi (pengerjaan dingin atau panas atau cor) F

Magnesium & paduan magnesium ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Paduan magnesium: produk wrough dan cor Ekstrusi & tempa T5 0,55 5,7 ZK60A Lembaran & pelat H24 0,7 HK31A Ekstrusi & tempa T5 0,2 0,5 8,5 AZ80A Ekstrusi lembaran & pelat F H24 0,2 1,0 3,0 AZ31B Zr Mn Zn Al Pembentukkan Kondisi Komposisi (%) Paduan

Penamaan paduan magnesium ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Tembaga & paduan tembaga ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Jenis paduan tembaga ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Nikel & paduan nikel ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Supperalloy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Keramik ,[object Object],[object Object],[object Object],[object Object],[object Object]

Struktur Kristal ,[object Object],[object Object],[object Object]

Hub.bil.koordinasi dan perbandingan jari2atom kation-anion 0,723-1,0 8 0,414-0,732 6 0,225-0,414 4 0,115-0,225 3 <0,155 2 Geometri koordinasi Perbandingan jari-jari kation-anion Bilangan koordinasi

Jari-jari kation dan anion 0,061 Ti 2+ 0,040 Si 4+ 0,069 Ni 2+ 0,102 Na 2+ 0,067 Mn 2+ 0,072 Mg 2+ 0,138 K + 0,184 S 2- 0,069 Fe 3+ 0,140 O 2- 0,077 Fe 2+ 0,220 I - 0,170 Cs + 0,133 F - 0,100 Ca 2+ 0,181 Cl - 0,136 Ba 2+ 0,196 Br - 0,053 Al 3+ Jari-jari ion (nm) Anion Jari-jari ion (nm) Kation

Struktur Kristal Tipe AX Cth.; NaCl, CsCl, ZnS dan intan ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Struktur kristal tipe AX ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Struktur kristal tipe AX ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Struktur kristal AX ,[object Object],[object Object],[object Object],Struktur kristal intan

Struktur kristal AmXp ,[object Object],[object Object],Struktur kristal Al 2 O 3

Struktur kristal AmBnXp ,[object Object],[object Object],[object Object],[object Object],Struktur kristal perouskite

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