期刊文献+

大晶粒含钛Fe-36.5Al基合金的超塑性研究 被引量:9

SUPERPLASTICITY IN LARGE-GRAINED Fe-36.5Al BASED ALLOYS ADDED Ti
下载PDF
导出
摘要 通过对未加Ti及加有不同量Ti的Fe-36.5Al(原子分数,%)基合金的高温变形行为的研究,发现加Ti的合金在900—1000℃,初始应变速率为2.08×10 ̄(-4)-8.33×10 ̄(-2)s ̄(-1)范围内比未加Ti的FeAl合金的延伸率有较大幅度提高,且应变速率敏感性指数m值普遍超过0.3。随含Ti量的增加,m值及延伸率也普遍提高,最高值分别达到0.43和297%.金相及TEM分析表明,变形过程中出现了明显的晶粒细化及亚晶形成过程,并由此导致了大晶粒含钛FeAl基合金的超塑性。 High temperature deformation behaviours of a binary FeAl compound and FeAl based alloys added different Ti contents have been investigated. The elongations of FeAl-Ti alloys were larger than that of the binary FeAl compound under an initial strain rate range of 2.08×10 ̄(-4)-8.33×10 ̄(-2) s ̄(-1), tested at 900-1000℃. The strain rate sensitivity index, m, is over 0.3 commonly. With the increase in Ti content in FeAl alloys, m value and elongation increase significantly. The maximum m value and the maximum elongation were up to 0.43 and 297% respectively. Microstructure analyses and TEM graphs show that grains became fine and subboundaries were formed during superplastic deformation, which resulted in the superplasticity in large grained FeAl-Ti alloys.
机构地区 上海交通大学
出处 《金属学报》 SCIE EI CAS CSCD 北大核心 1996年第4期417-422,共6页 Acta Metallurgica Sinica
基金 国家自然科学基金
关键词 金属间化合物 大晶粒 超塑性 铁铝合金 FeAl, intermetallics, large grains, superplasticity
  • 引文网络
  • 相关文献

参考文献4

共引文献1

同被引文献117

引证文献9

二级引证文献55

;
使用帮助 返回顶部