摘要
在Ni-Cr合金中加入3%al形成弥散硬化型的高硬弹台金.试验结果表明时效温度550℃,5h时进行分级时效能获得80%质量百分数的过饱和宫Cr(α)相比配制成分高40%Cr.并且测定析出富Cr(a)相颗粒的平均直径D为1.4685mm,颗粒的总面积占测绘面积的百分数PA为15.67%,分级时效析出大量弥散分布的过饱和富Cr(α)相强化合金基体,提高了合金的硬度和弯曲强度.
Dispersion-hardened elastic alloys were developed by adding 3% Al in Ni-Cr alloyS. When the'stepped ageing was done at 550 C /sh,oversaturated Cr(α)-rich phases were obtained about 80 percent,or Cris 40K higher than its formulated content. The average diameter of precipitated Cr(α)-rich phase grains is1. 4685mm. The total area of grains accounts for 15. 67% of the areas surveyed. A large number of oversaturated Cr(α) phases precipitated due to stepped ageing can strengthen the alloy matrix and improve the hardal and bending strength of the alloy.
出处
《东北大学学报(自然科学版)》
EI
CAS
CSCD
1995年第2期194-197,共4页
Journal of Northeastern University(Natural Science)
基金
国家科委重点推广应用项目
关键词
弥散硬化
时效处理
镍铬合金
高硬弹合金
dispersion hardening,ageing,oversaturated Cr(α)-rich phases.