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

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Presentation on theme: "Part IB Materials Science and Metallurgy Course A: Metals & Alloys Professor Harry Bhadeshia Lecture 11: Metallic Alloys."— Presentation transcript:

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

2 Transformation plasticity TRIP-Steels Dual-Phase Steels Cast Irons Aluminium alloys

3 DISPLACIVE RECONSTRUCTIVE

4 Olson and Hartman, 1982

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10 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.

11 50 m Bhadeshia, 1982

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14 TRIP-Assisted Steels for Automobiles

15 TRIP-assisted steel Bhadeshia, Honeycombe, 2006

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17 R. N. Parkins

18 Dual-phase ferrite- martensite steels Bhadeshia, Honeycombe, 2006

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24 Flake graphite, grey cast-iron

25 Three-dimensional shape of graphite (adapted from Underwood)

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27 Spheroidal graphite cast-iron

28 Hypoeutectic white cast- iron DoITPoMS micrograph library

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32 beverage cans Al-Mn or Al-Mn-Mg solid solution strengthening precipitation strengthening

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34 Aluminium-lithium alloys

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