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Hot Explosive Pressing of High Strength and Superhard Materials by R. Prümmer, Germany and K. Hokamoto, Japan

Hot Explosive Pressing of High Strength and Superhard Materials by R. Prümmer, Germany and K. Hokamoto, Japan. EPNM-2008 May 5-9, 2008. Lisse. Why Hot Expl. Pressing?. HEP Udimet 700 Ni-base Superalloy. Composition of several Nickel based Superalloys. Atomization of Udimet 700 - Powder.

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Hot Explosive Pressing of High Strength and Superhard Materials by R. Prümmer, Germany and K. Hokamoto, Japan

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  1. Hot Explosive Pressingof High Strength and Superhard MaterialsbyR. Prümmer, Germanyand K. Hokamoto, Japan EPNM-2008 May 5-9, 2008. Lisse

  2. Why Hot Expl. Pressing?

  3. HEP Udimet 700 Ni-base Superalloy

  4. Composition of several Nickel based Superalloys

  5. Atomization of Udimet 700 - Powder

  6. Density of Sample after HEP of Udimet 700- Powder

  7. Hardness of Samples vs. Temperature of HEP

  8. Micrograph of Sample showing surface melting 10

  9. 13 Strength of Sample vs. Temperature of HEP Diamond Powder 4-8 micrometer grain size

  10. HEP Diamond Powder, 4-8 um grain size

  11. Principle of Set-up for HEP

  12. Set-up for HEP

  13. Sample Set -up High pressure due to mach stem and end plug

  14. Sample, longitudinally cut open

  15. Micrograph of polished Surface of Diamond Compact

  16. Scanning Electron Micrograph of Fracture Surface

  17. Compact o 1100C As-received X-ray Diffraction Pattern of Diamond Powder and Compact as delivered: black, after heat treatment: blue; compacted: red

  18. b sin(q/l) ･107 (m-1) Slope; Lattice strain sin(q/l) ･1010 (m-1) Hall-Williamson Plot of Diamond Powder and Compact

  19. ConclusionsThe effects of the use of hot explosive pressing are demonstrated at the present investigation for Udimet 700 and diamond powders.Surface melting and softening the powders improves the condition of compaction, and the compacts recovered show improved mechanical properties and the crystalline lattice strain.

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