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˱ ߱

ǸŰ :   65,000
:   , , , ֺ
ǻ :   21

߱(Wdlding Metallurgy) ݼ (Fusion) (Solidification) ȭ ٻ µ (Phase Transformation) ϰ, (Welding Process) (Welding variable) Ͽ ϴ й̶ ִ. ڴ ѱ۷ ü̸鼭 ֵ ڷᰡ ƽϸ鼭 ϴ л, ϴ , غϴ Ͼ ߱ ü н ʿ ̵ ϱ ߱ Ͽ. ù ° ° 忡 (Welding Process) ݼ ⺻ Ư Ͽ, ° ʹ ߱п ٷ.


1 ݼӰ

1 ũ

1.1 ö(Plasma) ũ(Electric Arc)

1.1.1. ö(Plasma)

1.1.2. ũ(Electric Arc)

1.1.3. ڿ ̿ Ӱ

1.2 ؿ

1.2.1. (Thermionic Emission)

1.2.2. 忡 (Field Emission, Cold Emission)

1.3 Ư

1.3.1. GTAW, PAW

1.3.2. SMAW, GMAW, FCAW

1.4 ؼ ûȿ

1.5 ũ

1.5.1. η(Buoyancy Force)

1.5.2. ڱ(Lorenz Force)

1.5.3. ǥ (Surface Tension)

1.5.4. ũ ܷ(Arc Shear Stress)

1.6 ݼ ȭ(Metal Evaporation)

1.6.1. ݼ ս

1.6.2. ߻

1.7 ڼ

1.8 Ư

1.8.1. Ư

1.8.2. Ư


2 Process

2.1

2.1.1. Process

2.1.2. е Ư

2.2 Ƽƿ

2.2.1.

2.2.2. Ҳ

2.2.3.

2.3 Ǻ ũ (SMAW)

2.3.1.

2.3.2. Ǻ

2.3.3.

2.3.4. Ư

2.3.5.

2.3.6.

2.4 ֽ ũ (GTAW)

2.4.1.

2.4.2. ؼ(Polarity)

2.4.3. ֽ

2.4.4. ȣ

2.4.5.

2.5 ö ũ (PAW)

2.5.1.

2.5.2. ũ ߻

2.5.3. ŰȦ (Keyhole Welding Technique)

2.5.4.

2.6 Ż ũ (GMAW)

2.6.1.

2.6.2. ȣ

2.6.3. ݼ

2.6.4.

2.7 ÷ ھ ũ (FCAW)

2.7.1.

2.7.2.

2.7.3. FCAW ̾(Wire)

2.7.4. ȣ Ư

2.7.5. Flux Ư

2.8 ȣ (SAW)

2.8.1.

2.8.2.

2.8.3. SAW

2.8.4. ̾ Ư

2.8.5. ÷(Flux)

2.8.6. ÷(Flux)

2.9 ϷƮ (ESW)

2.9.1.

2.9.2. Ҹ ̵

2.9.3. Ҹ ̵

2.9.4.

2.10 ں (EBW)

2.10.1.

2.10.2.


3 ݼ

3.1 ݼ

3.2 ӵ

3.2.1. ٻ

3.2.2. ұ ٻ

3.2.3. ӵ

3.3 ݼ ݼ Ư

3.3.1. BCC

3.3.2. FCC

3.3.3. HCP

3.3.4. BCC FCC

3.4 µ ؿ Ģ(Lever Rule)

3.5 ó

3.5.1. ҵ() ()

3.5.2. ȭ ó(Solution Annealing)

3.5.3. 퀜Ī(, , Quenching)

3.5.4. ۸(, ҷ, Tempering)


4 ο ġ , ,

4.1 ο ȭй

4.2

4.3

4.4


5 ܷ , Ƿ



2 Ư

1 źҰ

1.1 Fe-Fe3C µ

1.2 ׿ (TTT Diagram) ð (CCT Diagram)

1.2.1. ޶Ʈ(Pearlite)

1.2.2. ̳Ʈ(Bainite)

1.3 ٻƮ

1.3.1. ȭ 浵

1.4 ձ


2 ձݰ(Low Alloy Steel)

2.1

2.1.1. Ư

2.1.2.

2.2 ¿

2.2.1. ˷̴ų(Al-Killed)

2.2.2. 2.5%, 3.5% ̰

2.2.3. 9% ̰


3 θ 136

3.1 ׳Ʈ θ(Austenitic Stainless Steel)

3.1.1. ȭ ԰ ν

3.1.2. Ʈ

3.1.3. ٻƮ

3.2 Ʈ θ(Ferritic Stainless Steel)

3.2.1. ԰ ȭ

3.3 ٻƮ θ(Martensitic Stainless Steel)

3.4 ÷ θ(Duplex Stainless Steel)

3.4.1. ÷ θ Ư


4 ձ

4.1 ձ

4.2 ձ

4.2.1. ȭ ձ

4.2.2. ȭ ձ

4.2.3. л ȭ ձ

4.3 ձ Ư

4.3.1. ձ

4.3.2. , ռ


5 ˷̴ ձ(Aluminum Based Alloy)

5.1

5.1.1. ó ձ

5.1.2. ó ձ

5.2 ˷̴ ձ Ư

5.2.1. ȭ

5.2.2.

5.2.3. â

5.2.4. ȭ

5.2.5. Ư

5.3 ˷̴ ձ

5.3.1. ˷̴ ձ



3

1

1.1 й

1.1.1. (Equilibrium Segregation Coefficient)

1.1.2. µ ȭ

1.2 Ȯ꿡 й

1.2.1.

1.2.2. ׻󿡼 ѵ Ȯ ̿ й

1.3 (Constitutional Supercooling)

1.3.1.

1.3.2.

1.3.3. ӵ

1.4

1.4.1. ̼ (Microsegregation)

1.4.2. Ž (Macrosegregation)

1.5 ðӵ ݼ


2 ݼ : (Grain Structure)

2.1 ٻ

2.2 ü (Epitaxial Growth)

2.3 ü (Nonepitaxial Growth)

2.4 (Competitive Growth)

2.5 ӵ ȭ

2.6 ݼ ̼ȭ

2.6.1. ٻ

2.6.2. Ȳ(S) 󵵿 ǥ ° ȭ

2.6.3. ٻ(Heterogeneous Nucleation)

2.6.4. ǥ ٻ


3 ݼ : ̼

3.1

3.1.1. ӵ(R, Growth Rate) µ (G, Temperature Gradient)

3.1.2. ġ ȭ

3.2 ũ(Ǵ )

3.3

3.3.1. ũ Ⱦ (1Hz Transverse Oscillation)


4

4.1 ׳Ʈ θ Ʈ ׳Ʈ

4.1.1. ǻ ̿ µ(Pseudo-binary Phase diagram)

4.1.2. ׳Ʈ θ

4.1.3. Ʈ θ

4.1.4. Schaeffler Diagram ̿ Ferrite Է

4.1.5. ð ӵ Ferrite Է ȭ

4.1.6. (Tip) ÿ ȭ

4.1.7. 簡 Ferrite

4.2 źҰ ձݰ(Low Alloy)

4.2.1. CCT(Continuous Cooling Transformation) Diagram

4.2.2. ̼ Ʈ ִ

4.2.3. Acicular Ferrite


5 ݼ ȭ ұ

5.1 ̼ (Microsegregation)

5.1.1. Ȯ

5.1.2. Tip

5.2 (Banding)

5.3 繰(Inclusion) (Gas Porosity)

5.4 α ұ

5.5 ݼ Ž (Macro Segregation)

5.5.1. (Single-Pass)

5.5.2. (Multi Pass)


6 ݼ տ

6.1 տ Ư¡,

6.1.1. ԰ տ(Intergranular Cracking)

6.1.2. տ ΰ

6.2 տ ΰ ִ

6.2.1. Ȳ(S) (P) Ҽ µ

6.2.2. ׻

6.2.3. ʱ

6.2.4. ݼ

6.2.5.

6.3 տ

6.3.1. ݼ

6.3.2.

6.3.3.



4 κ

1 κ (PMZ)

1.1 ȭ

1.1.1. ȭ ⱸ

1.1.2. (Grain Boundary) ׻


2 κ ο õ

2.1 ȭ տ(Liquation Cracking)

2.1.1. ȭ տ ΰ

2.1.2. ȭ տ(Liquation Cracking) ⱸ

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