[현미경 표준조직]탄소강 주철

소개글

[현미경 표준조직]탄소강 주철에 대한 보고서 자료입니다.

본문내용

[현미경 표준 조직] 탄소강 주철
Ferrite
Magnification　X100
Etching reagent　3％ Nital（Approx.12s）
Composition　C 0.02％，Si 0.24％，Mn 0.22％，P 0.005％，S0.017％
Heat treatment　950℃X1h　Air cool（Normalizing）
Hardness　40 to 70 HB
Tensile strength　216 to 314 N/・（22 to 32 ・f/・）
Elongation　40 to 50 ％
Pearlite and Ferrite
Magnification　×500
Etching reagent　3％ Nital（Approx.10s）
Composition　C 0.46％，Si 0.24％，Mn 0.69％，P 0.020％，S 0.022％
Heat treatment　930℃Xl h　Air cool（Normalizing）
Hardness　150 to 200 HB
Tensile strength　Approx. 588N/・（60・f/・）
Elongation　Approx. 22％
Pearlite
Magnification　×500
Etching reagent　3％ Nital（Approx. 8s）
Composition　C 0.88％，Si 0.28％，Mn 0.36％，P 0.020％，S 0.013％
Heat treatment　900℃X5h　Furnace cool（Anneaing）
Hardness　180 to 200 HB
etwork Cementite
Magnification　×200
Etching reagent　3％ Nitric acid-Alcohol solution（Approx. 10s）
Composition　C 1.16％，Si0.24％，Mn 0.46％，P 0.013％，S 0.017％
Heat treatment　950℃×2h Furnace cool（Anneaing）
Hardness　220 to 250 HB
Globular Cementite
Magnification　×200
Etching reagent　3％ Nital（Approx. 8s）
Composition　C 1.16％，Si 0.24％，Mn 0.46％，P 0.013％，S 0.017％
Heat treatment　After heating at 760℃×3h, cool down to 720℃ in furnace，and keep at 720℃×4h, then cool down to room temperature in furnace
Hardness　160 to 210 HB
Tensile strength　588 to 735N/・（60 to 75・f/・）

키워드

Martensite,   Cementite,   Pearlite,   Ferrite,   현미경,   표준조직,   탄소강,   주철