VoL21 No.1 刘兴博等：确对GH169合金组织性能的影响 年31， 012 10 20U 图6确对GH169合金晶粒及b相的影响 图7确对GH169合金中y和y的影响 3结论 “反常“的“强韧化”作用.这一重要实验事实，有 待于重复显现和确证以及进行深人的研究， (1)确含量在10-3~1.3×10-4时对G日169 合金的室温及500,650℃时解时拉伸强度及塑性 参考文献 均无显著影响， 1陈国良.高温合金学.北京：冶金工业出版社，1988.138 (2)确含量的不同并未明显影响合金的晶粒 2 Wagner H I.Hall A M.Physical Metallurgy of Alloy 度以及ò相和主要强化相y和y的数量及分布. 718.DMIC Report.1965.217 (3)确含量10~3~1.3×10·时能显著提 3 Loria E A.The Status and Prospect of Alloy718.J 高GH169合金在650℃，686MPa条件下的持久 Metals,1988.7:36 4 Amitchell.Melting and Refining of Superalloys and 寿命，较高含量的确亦能提高持久塑性，然而在 Titanium Alloys.ISIJ,32(5):557 含量为3×10~3左右时合金的持久塑性却呈 5 Mclean M.Strang A.Effects of Face Elements on 现“低谷"现象 Mechanical Properties of Superalloys.Metals Technol- (4)在GH169合金中磷对持久性能似乎有 0gy.1984.11:454 Effect of Phosphorus on Mechanical Properties and Microstructure in GH169(In718)Alloy Liu Xingbo,Tang Bin,Dong Jianxin,Hu Yaohe,Xie Xishan Material Science and Engineering School.UST Beijing.Beijing 100083.China ABSTRACT The influence of phosphorus ranging from 10--1.3x 10-on mechanical properties and microstructure of GH169(IN718)has been detected.The results show that phosphorus has a strengthening and toughening effect,i.e.to increase stress rupure life and ductility of GH169(IN718) at650℃. KEY WORDS GH169(IN718);phoshorou;mechanical property