...
首页> 外文期刊>Philosophical Magazine Letters >Unusual room-temperature compressive plasticity in nanocrystal-toughened bulk copper-zirconium glass
【24h】

Unusual room-temperature compressive plasticity in nanocrystal-toughened bulk copper-zirconium glass

机译:纳米晶钢化大块锆铜玻璃中的常温常压塑性

获取原文
获取原文并翻译 | 示例
           

摘要

Cast Cu_(50)Zr_(50) alloy rods with a diameter of 1 mm have been found to consist of a glassy phase containing fine crystalline particles with a size of about 5 nm. They have a glass transition temperature T_g of 675 K, and a large supercooled-liquid region extending 57 K above T_g. The rods exhibit a high yield strength of 1860 MPa and a Young's modulus of 104 GPa. Because they contain a dispersion of embedded nanocrystals, the as-cast bulk metallic glass rods can sustain a compressive plastic strain at room temperature of more than 50 percent, an exceptional value which is explicable by compensation of any shear softening by nanocrystal coalescence and pinning of shear bands.
机译:已经发现,直径为1mm的铸造Cu_(50)Zr_(50)合金棒由玻璃相组成,该玻璃相包含尺寸为约5nm的细晶体颗粒。它们的玻璃化转变温度T_g为675 K,并且在T_g上方延伸57 K的较大的过冷液体区域。棒表现出1860 MPa的高屈服强度和104 GPa的杨氏模量。由于它们包含嵌入的纳米晶体分散体,因此铸态的块状金属玻璃棒在室温下可承受超过50%的压缩塑性应变,这是一个异常值,可通过补偿由于纳米晶体聚结和钉扎而引起的任何剪切软化来解释剪切带。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号