A Method of Optimizing Alloy Extrusion Process
A technology of alloys and processes, applied in design optimization/simulation, instruments, calculations, etc., can solve problems such as failure to utilize equipment, waste of resources, failure, etc.
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[0075] Taking nickel-based superalloy as an example, follow the steps below
[0076] Step 1 Establish the constitutive equation of the alloy to be extruded (nickel-based superalloy)
[0077] Select 5 values between 1040-1160°C; these five values are 1040°C, 1070°C, 1100°C, 1130°C, 1160°C;
[0078] At a strain rate of 0.0001-100s -1 Select 5 point values between; 5 point values are 0.001s -1 、0.01s -1 , 0.1s -1 、1s -1 、10s -1 ;
[0079] Under the restriction of selected temperature and strain rate, carry out extrusion experiment; Collect stress-strain data, and construct hyperbolic sine type Arrhenius equation according to the stress-strain data collected; The expression of described hyperbolic sine type Arrhenius equation The formula is:
[0080]
[0081] In formula (1.1),
[0082] is the strain rate, and its unit is s -1 ;
[0083] T is the average temperature of the extruded billet, and its unit is K;
[0084] R is the molar gas constant, with a valu...
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