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      Module 2: The Power of Metal in
                         the Andean World

 
 


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Professor Heather Lechtman
Professor Samuel M. Allen


MONDAY, 23 June

Lecture 8:30-11:30 am

-- Metallurgy of the New World and the Old World: societies, metals, and materials properties (HL)
-- Physical metallurgy: crystallinity; freezing of pure metals and alloys; microsegregation (coring) (SA)

Laboratory 1-5 pm

(a) Interpretation of metallic microstructures (16-536)
(b) Smelting copper oxide ore (4-003)

Video 5:15 pm

PBS Odyssey film: The Incas (approx. 1 hr.)

 

TUESDAY 24 June

Lecture 8:30-11:30 am

-- Andean sheet metal tradition vs. Central/Mesoamerican casting tradition: plastic deformation in Andean metalworking design (HL)
-- Physical metallurgy: dendrite formation; corrosion products; large ingot solidification; eutectic solidification (SA)

Laboratory 1-5 pm

(a) Interpretation of metallic microstructures (16-536)
(b) Preparation of wax pattern and mould for lost-wax casting of Cu-Ag alloy bar ingots (8-014)

Blacksmithing 7pm

Toby Bashaw: demonstration of blacksmithing techniques (4-003)

 

WEDNESDAY 25 June

Lecture 8:30-11:30 am

-- Color: the focus of Andean alloy development; surface enrichment techniques (HL)
-- Physical metallurgy: plastic deformation; slip via dislocation movement; strain hardening; strengthening mechanisms (SA)

-- Video: Experiments with Bubble Model of a Metal Structure

Laboratory 1-5 pm

(a) Interpretation of metallic microstructures (16-536)
(b) Melting and pouring Cu-Ag alloy to cast bar ingots; begin working and annealing copper bar (4-003)

Video 5:15

PBS Nova film: Inca (approx. 1 hr.)



THURSDAY 26 June

Lecture 8:30-11:30 am

-- Color and planarity: cloth, metal, and the culture of technology (HL)
-- Physical metallurgy: effects of temperature on mechanical properties; hot working; annealing and recrystallization (SA)

Laboratory 1-5 pm

(a) Interpretation of metallic microstructures (16-536)
(b) Continue working copper sheet metal; working, annealing, pickling Cu-Ag alloy bars to deform them plastically and to develop enriched silver surfaces (4-003)

 

FRIDAY 27 June

Lecture 8:30-11:30 am

-- The power of metal in the Andean world: tumbaga vs. bronze (HL)
-- Bronze metallurgy: mechanical and physical properties of bronzes; smelting and preparation of bronze alloys (HL)

Laboratory 1-5 pm

(a) Interpretation of metallic microstructures (16-536)
(b) Continue plastic deformation of Cu-Ag bars (4-003)