一种新型的高强高导兼顾的铜合金材料———Cu Ag Zr合金,采用真空熔炼的方法制备。利用硬度测试、金相和透射电镜分析等方法,研究了微量Zr对Cu Ag合金再结晶的影响。结果表明, 微量 Zr的加入能抑制合金的再结晶过程,使 Cu Ag合金的再...一种新型的高强高导兼顾的铜合金材料———Cu Ag Zr合金,采用真空熔炼的方法制备。利用硬度测试、金相和透射电镜分析等方法,研究了微量Zr对Cu Ag合金再结晶的影响。结果表明, 微量 Zr的加入能抑制合金的再结晶过程,使 Cu Ag合金的再结晶软化温度提高 200℃以上;同时还能显著细化合金的再结晶晶粒;Zr对合金性能的影响主要是通过使该合金中形成细小、弥散分布的析出相来实现的。展开更多
The nitriding behavior of cold rolled Fe93Ni4Ti3 specimens was compared with that of hot rolled specimens of the same materials. Radio frequency (rf) nitriding was performed for 10 minutes in a 10-2 mbar nitrogen atmo...The nitriding behavior of cold rolled Fe93Ni4Ti3 specimens was compared with that of hot rolled specimens of the same materials. Radio frequency (rf) nitriding was performed for 10 minutes in a 10-2 mbar nitrogen atmosphere. The continuous plasma power was varied from 300-550 W in steps 50 W or less. Results of optical microscopy (OM), x-ray diffraction (XRD) and microhardness measurements (Hv) are presented and discussed with regard to the influence of kind rolling on the nitriding behavior, particularly nitride formation and nitride layer growth on mechanical properties. The results show a remarkable increase of nitrogen diffusivity and microhardness of cold rolled nitride samples. These best results may be attributed to enhancement of the defect and/or a compressive stress.展开更多
文摘一种新型的高强高导兼顾的铜合金材料———Cu Ag Zr合金,采用真空熔炼的方法制备。利用硬度测试、金相和透射电镜分析等方法,研究了微量Zr对Cu Ag合金再结晶的影响。结果表明, 微量 Zr的加入能抑制合金的再结晶过程,使 Cu Ag合金的再结晶软化温度提高 200℃以上;同时还能显著细化合金的再结晶晶粒;Zr对合金性能的影响主要是通过使该合金中形成细小、弥散分布的析出相来实现的。
文摘The nitriding behavior of cold rolled Fe93Ni4Ti3 specimens was compared with that of hot rolled specimens of the same materials. Radio frequency (rf) nitriding was performed for 10 minutes in a 10-2 mbar nitrogen atmosphere. The continuous plasma power was varied from 300-550 W in steps 50 W or less. Results of optical microscopy (OM), x-ray diffraction (XRD) and microhardness measurements (Hv) are presented and discussed with regard to the influence of kind rolling on the nitriding behavior, particularly nitride formation and nitride layer growth on mechanical properties. The results show a remarkable increase of nitrogen diffusivity and microhardness of cold rolled nitride samples. These best results may be attributed to enhancement of the defect and/or a compressive stress.
