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Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

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Page 1: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Part IBMaterials Science and Metallurgy

Course A: Metals & Alloys

Professor Harry Bhadeshia

Lecture 11: Metallic Alloys

Page 2: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Transformation plasticity

TRIP-Steels

Dual-Phase Steels

Cast Irons

Aluminium alloys

Page 3: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

DISPLACIVE

RECONSTRUCTIVE

Page 4: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Olson and Hartman, 1982

Page 5: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Olson and Hartman, 1982

Page 6: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Olson and Hartman, 1982

Page 7: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 8: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

QuickTime™ and aYUV420 codec decompressor

are needed to see this picture.

Page 9: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 10: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Displacive transformations can be induced by undercooling.

Martensitic transformation is a deformation accompanied by a change in crystal structure.

Therefore, martensite can be induced by stress.

Page 11: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

50 m

Bhadeshia, 1982

Page 12: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 13: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 14: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

TRIP-Assisted Steels for Automobiles

Page 15: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

TRIP-assisted steel

Bhadeshia, Honeycombe, 2006

Page 16: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 17: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

R. N. Parkins

Page 18: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Dual-phase ferrite-martensite steels

Bhadeshia, Honeycombe, 2006

Page 19: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 20: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 21: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 22: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 23: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 24: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Flake graphite, grey cast-iron

Page 25: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Three-dimensional shape of graphite (adapted from Underwood)

Page 26: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 27: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Spheroidal graphite cast-iron

Page 28: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Hypoeutectic white cast-iron

DoITPoMS micrograph library

Page 29: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 30: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 31: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 32: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

beverage cans Al-Mn or Al-Mn-Mg

solid solution strengthening

precipitation strengthening

Page 33: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys
Page 34: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys

Aluminium-lithium alloys

Page 35: Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys