Maricopa Community Colleges  WLD135   19956-20086 
Official Course Description: MCCCD Approval: 07/22/08
WLD135 19956-20086 LEC 3 Credit(s) 3 Period(s)
Metallurgy
A study of the atomic arrangements and crystalline structures found in metal. Includes extractive and physical metallurgy. Methods used in testing and inspecting metals.
Prerequisites: None.
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MCCCD Official Course Competencies:
 
WLD135   19956-20086 Metallurgy
1. Identify and describe the two types of metallurgy. (I)
2. Explain the various types of metal properties, mechanical, and physical and chemical. (II)
3. Analyze metal structures and identify their unit cell structures. (III)
4. Explain expansion and contraction of metals and the thermal factors involved in welding. (IV)
5. Describe the various grain structures of metals and how heat affects grain growth. (V)
6. Analyze equilibrium diagrams, and explain the liquidus and solidus points. (VI)
7. Analyze the effects that elements have on steel and their effects on grain. (VII)
8. Explain the weld ability of various metals and its thermal conductivity towards grain growth. (VIII, XI)
9. Explain the heat treatment process for different types of metals. (IX)
10. Contrast heating and treating processes. (X)
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MCCCD Official Course Outline:
 
WLD135   19956-20086 Metallurgy
    I. Types
        A. Extractive
        B. Physical
      II. Metal Properties
          A. Mechancial
            1. Stress
            2. Strain
            3. Elasticity
            4. Strength
            5. Tensile strength
            6. Compressive strength
            7. Fatigue strength
            8. Yield strength
            9. Hardness
            10. Toughness
            11. Plasticity
            12. Ductility
            13. Malleability
            14. Brittleness
          B. Physical
            1. Thermal expansion
            2. Specific gravity
            3. Melting point
            4. Electrical conductivity
            5. Magnetic susceptibility
            6. Reflectivity
          C. Chemical: atomic structure
        III. Unit Cell Structures
            A. Body centered cubic
            B. Face centered cubic
            C. Close packed hexagonal
          IV. Expansion and Contraction
              A. Heat rise
              B. Pre-heat speed
              C. Holding time
              D. Cooling rate
              E. Atmospheric conditions
            V. Grain Structure
                A. Ferretic
                B. Austinetic
                C. Martensetic
              VI. Equilibrium Diagram
                  A. Gamma iron
                  B. Alpha iron
                  C. Eutecloid structure
                VII. Effects of Elements on Steel
                    A. Carbon
                    B. Manganese
                    C. Silicon
                    D. Sulphur
                    E. Phosphorous
                    F. Other elements
                  VIII. Weldability
                      A. Carbon steels
                        1. Low carbon
                        2. Medium carbon
                        3. High carbon
                      B. Alloy steels
                        1. Chrome
                        2. Nickel
                        3. Manganese
                      C. Stainless steel
                        1. 300 series
                        2. 400 series
                      D. Aluminum index system
                        1. 1xxx
                        2. 2xxx
                        3. 3xxx
                        4. 4xxx
                        5. 5xxx
                        6. 6xxx
                        7. 7xxx
                        8. 8xxx
                    IX. Heat Treatment
                        A. Carbon steel
                        B. Stainless steel
                        C. Aluminum
                        D. Cast iron
                      X. Heating and Treating Processes
                          A. Induction
                          B. Furnace heating
                          C. Torch heating
                          D. Molten flux
                        XI. Applications
                            A. Metal type
                            B. Functional uses
                            C. Welding processes
                            D. Weld finishing
                            E. Surface conditioning
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