热处理对喷射成形FGH4095组织的影响  

Effect of Heat Treatment on Microstructure of Spray-formed FGH4095Alloy

作　　者：舒琴[1] 徐轶[1] 葛昌纯[1,2] 史小娇[1] 汪杰[1] 

机构地区：[1]西南交通大学材料科学与工程学院,成都610031 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《材料导报》2012年第20期6-8,共3页Materials Reports

基　　金：国家863项目(2007AA037502)

摘　　要：采用喷射成形技术制备镍基高温合金FGH4095,其组织均匀、坯件整体致密度高、氧含量低、晶粒为细小的等轴晶。经测定其致密度在99%以上,氧含量为20×10-6。合金热处理过程中,随固溶处理温度的升高(1120℃、1140℃、1160℃),主要强化相γ′相逐渐溶解,溶解尺寸由小变大,溶解最慢的γ′相位于晶界上。二级时效后再次析出细小的γ′相。Nickel based superalloy FGH4095 with homogenous microstructures, high-density, low oxygen con tents, refined and equiaxed grains was prepared using spray forming （SF） technology. Its density is over 99% and oxy gen content is 20 ×10 ^-6. During heat treatment, the main strengthen phase γ＇dissolves gradually with the rising of so lution temperature（ 1120℃, 1140℃, 1160℃）. The dissolving size is from small to big, and last completely dissolve y is on grain boundaries. After aging treatment, refinedγ~precipitate again.

关 键 词：FGH4095 喷射成形 热处理 镍基高温合金 

分 类 号：TG156[金属学及工艺—热处理]