10-25 Recap Matthew Humbert Page 1. Fractology ASM Handbooks –11 – Failure Analysis and Prevention –12 –Fractogrophy –19 – Fatigue and Fracture Page 2.

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Presentation transcript:

10-25 Recap Matthew Humbert Page 1

Fractology ASM Handbooks –11 – Failure Analysis and Prevention –12 –Fractogrophy –19 – Fatigue and Fracture Page 2

Material Limits Page 3

4 th Gen Turbine Blades Operating at 1590 ºC Reducing and Oxidizing Environment PtAl TBC Convective cooling Page 4 J Gurrappa, I Gurrappa, I. Platinum Aluminide Coatings for Oxidation Resistance of Titanium Alloys PLATINUM METALS REVIEW

Bulk HT Processing Skull melting Plasma processing –Sintering –Melting Reactive Flame Spraying Reactive Sintering Page 5 Everything reacts with everything Anything is possible

Environmental Damage Hydrogen embrittlement Stainless steel sensitization Blue embrittlement –Temper embrittlement – 425C –Hot-shorting Liquid metal embrittlement Nitrogen, oxygen, and carbon embrittlement in specific materials Page 6

Baffle Bolt Page 7

Ductile to Brittle Transition Page mild steel

Giga-tonnes of Nano-Structure To make big things we need to weld –Progress with BMG’s Welding – Melting and solidifying Control microstructure during solidification –Keep enthalpy high while making entropy small Complex alloys with many components. Page 9 Y. Kawamura, Liquid phase and supercooled liquid phase welding of bulk metallic glasses, Materials Science and Engineering: A, Volumes 375–377, 15 July 2004, Pages

Questions Page 10

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