Method for growing single crystals of metals
First Claim
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1. A method for growing a single-crystal metal, the method comprising:
- heating a polycrystalline metal specimen in a non-oxidizing environment;
applying a first plastic strain to the heated polycrystalline metal specimen to initiate growth of a grain of the heated polycrystalline metal specimen by displacing distal ends of the heated polycrystalline metal specimen; and
applying a second plastic strain to the heated polycrystalline metal specimen to propagate growth of the grain to form a single-crystal metal by displacing a first distal end of the heated polycrystalline metal specimen at a faster rate than a second distal end of the heated polycrystalline metal specimen.
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Abstract
A method for growing large single crystals of metals is disclosed. A polycrystalline form of a metal specimen is initially heated in a non-oxidizing environment. A minimum plastic strain is then applied to the heated metal specimen to initiate the growth of a selected grain within the heated metal specimen. Additional plastic strain is subsequently applied to the heated metal specimen to propagate the growth of the selected grain to become a large single crystal.
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Citations
16 Claims
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1. A method for growing a single-crystal metal, the method comprising:
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heating a polycrystalline metal specimen in a non-oxidizing environment; applying a first plastic strain to the heated polycrystalline metal specimen to initiate growth of a grain of the heated polycrystalline metal specimen by displacing distal ends of the heated polycrystalline metal specimen; and applying a second plastic strain to the heated polycrystalline metal specimen to propagate growth of the grain to form a single-crystal metal by displacing a first distal end of the heated polycrystalline metal specimen at a faster rate than a second distal end of the heated polycrystalline metal specimen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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