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    • 6. 发明申请
    • Nano-crystalline steel sheet
    • 纳米结晶钢板
    • US20050252586A1
    • 2005-11-17
    • US11117649
    • 2005-04-28
    • Daniel Branagan
    • Daniel Branagan
    • B22D11/06C22C45/00
    • B22D11/0622C22C45/02
    • A nano-crystalline steel sheet and a method of making a nano-crystalline steel sheet are provided. The nano-crystalline steel sheet may be produced by supplying a liquid metallic glass forming alloy to counter-rotating casting rolls. The liquid alloy may form partially solidified layers on each of the casting rolls. The partially solidified layers may then be pressed together by the counter-rotating casting rolls to form a sheet. The twin casting roll method may provide a sufficiently high cooling rate during solidification of the alloy to create a nano-crystalline microstructure.
    • 提供纳米晶体钢板和制造纳米晶体钢板的方法。 纳米晶体钢板可以通过将液态金属玻璃形成合金供给到反向旋转铸辊中来制造。 液体合金可以在每个铸辊上形成部分固化的层。 然后可以通过反向旋转的铸辊将部分固化的层压在一起以形成片材。 双辊铸造方法可以在合金固化期间提供足够高的冷却速率以产生纳米晶体微结构。
    • 8. 发明申请
    • Controlled Thermal Expansion of Welds to Enhance Toughness
    • 焊接控制热膨胀以增强韧性
    • US20070190255A1
    • 2007-08-16
    • US11736175
    • 2007-04-17
    • Daniel Branagan
    • Daniel Branagan
    • B05D7/00
    • C23C26/00B23K9/04B23K35/308C23C4/04C23C4/06C23C4/123
    • A method is provided for forming a metallic overlay having enhanced toughness. The metallic overlay may be a weld, a metallic coating, or similar application. The method includes applying a glass forming metallic alloy to a substrate while the alloy is in a molten or semi-molten state. At the interface of the metallic alloy overlay and the substrate the substrate metal becomes at least partially molten and combines with the alloy to form metallurgical bonds. When the metallic alloy cools it experiences a high relative degree of thermal contraction. The metallurgical bonds between the substrate and the alloy constrain the contraction of the alloy at the interface with the substrate. This results in the inducement of compressive stresses in the metallic alloy overlay. The induced compressive stresses inhibit the formation of cracks in the overlay and/or mitigation of the effects of any cracks in the overlay.
    • 提供一种用于形成具有增强韧性的金属覆层的方法。 金属覆层可以是焊接,金属涂层或类似的应用。 该方法包括在合金处于熔融或半熔融状态时将玻璃形成金属合金施加到基底上。 在金属合金覆层和基底的界面处,基底金属至少部分熔融并与合金结合形成冶金结合。 当金属合金冷却时,它经历较高的相对热收缩程度。 衬底和合金之间的冶金结合限制了合金在与衬底的界面处的收缩。 这导致金属合金覆层中压应力的诱导。 诱导的压缩应力抑制覆盖层中的裂纹的形成和/或减轻覆盖层中任何裂纹的影响。