Method and device for improving room temperature plasticity of block amorphous alloy and structural member of block amorphous alloy

Method and device for improving room temperature plasticity of block amorphous alloy and structural member of block amorphous alloy

  • CN 102,719,625 B
  • Filed: 07/11/2012
  • Issued: 04/08/2015
  • Est. Priority Date: 07/11/2012
  • Status: Active Grant
First Claim
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1. improve a method for block amorphous alloy and structural part temperature-room type plasticity thereof, it is characterized in that, comprise step as follows:

  • (1) polish bright and clean by non-crystaline amorphous metal surface and be placed on rigidity backing plate, on non-crystaline amorphous metal body, place a boss with centre hole stood upside down, boss is arranged along non-crystaline amorphous metal surface normal direction, and compresses;

    (2) short pulse laser beam is led to boss centre hole, irradiate non-crystaline amorphous metal surface, produce blast plasma stock wave, shock wave is in non-crystaline amorphous metal body, make irradiated area that the high strain-rate viscous deformation of trace occur, formation nick is cheated, viscous deformation can be subject to the constraint of boss when occurring, also be subject to the constraint of non-deformed region around non-crystaline amorphous metal body simultaneously, because of but carry out under three-dimensional compressive stress state, after irradiating 1 ~ 10 pulse, will produce residual compressive stress around deformed region, high strain-rate viscous deformation also can bring out fine and close shear zone;

    Short-pulse laser beam diameter is slightly less than boss center-hole diameter, and coaxial with boss centre hole;

    Short pulse laser beam is power density is 1 ~ 10GW/cm 2, pulse width is the pulse laser of 1 ~ 50ns;

    (3) the mobile boss with centre hole and short pulse laser beam position, by predetermined dot matrix repeating step (1), (2), complete the process to the whole surface of non-crystaline amorphous metal body.

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