摘要
为解决GH1016合金在600～800℃温度区间的中温低塑性问题,本文提出一种新的热处理制度.采用1 160℃×30 min炉冷到950℃×120 min,然后空冷的热处理制度,在20～950℃的条件下对处理后的合金试样进行拉伸性能测试并对拉伸断口进行分析.结果表明,经过改进的热处理制度处理后,合金的晶界析出大量的碳化物,阻止了拉伸时裂纹的萌生和扩展,从而提高了合金的塑性.
To avoid the low plasticity of GH1016 alloy at 600 ～ 800 ℃,new heat treatment was proposed 1 160 ℃× 30 min,furnace cooling to 950 ℃ × 120 min and then air cooling. Tensile performance tests and fracture analysis were carried out at 20 ～ 950 ℃. The results showed that after 1 160 ℃ × 30 min furnace cooling to 950 ℃ × 120 min and then air cooling,a large amount of carbide precipitates on the grain boundary,preventing the initiation and propagation of cracks,thus improving the ductility of the GH1016 alloy.
出处
《材料与冶金学报》
CAS
北大核心
2015年第2期144-148,共5页
Journal of Materials and Metallurgy
基金
国家自然科学基金项目(No.50971038)
关键词
热处理
GH1016合金
中温塑性
晶界
heat treatment
GH1016 alloy
plasticity at middle temperature
grain boundary
