第26第6期 2016年12月
粉束洽金工业
POWDER METALLURGY INDUSTRY
DOl: 10.13228/j.boyuan.issn1006-6543.20160098
Vol. 26, No.6, p50-54
Dec.2016
预变形对FGH97粉未高温合金热处理组织的影响
韩寿波12，吕日红3，张莹12，孙志坤1.2，李科敏1.2，
黄虎豹1-2，刘明东"2，张义文1-2
（1.北京钢研高纳科技股份有限公司，北京100081：2.钢铁研究总院高温材料研究所，北京100081：
3.贵州黎阳航空动力有限公司，贵州贵阳561102）
要：FGH97粉末高温合金制品在生产加工过程中由于操作不当会出现局部表面凹坑，对存在该缺陷的合摘
金制品进行检测分析，发现受外力影响的区域经热处理后晶粒异常粗大：采用热模拟实验验证了局部变形对处理过程中会发生晶税异常长大，造成组织不均匀，进而影响合金的性能与应用。合金在制备过程应严格遵守操作规程，避免局部发生变形
关键词：FGH97粉末高温合金：预变形：热处理：晶粒长大
文献标志码：A
文章编号：1006-6543-(2016)06-0050-05
Effect ofpre-deformation on heattreatment microstructure of FGH97PM
superalloy
HAN Shou-bo', LU Ri-hong', ZHANG Ying'2, SUN Zhi-kun'-, LIKe-min'-,
HUANG Hu-bao'-2, LIU Ming-dong'2, ZHANG Yi-wen-2
(1. Beijing CISRI-Gaona Materials & Technology Co., Ltd., Beijing 100081 , China ; 2. High Temperature Materials Research Institute, CISRI, Beijing 100081, China; 3. Guizhou Liyang Aviation Dynamic Co., Ltd.,
Aviation Industry of China, Guiyang 561102, China)
Abstraet; During the production and processing process, local surface pits usually occur on FGH97 PM superal-loy products due to improper operation. The FGH97 alloy product with this kind of defects was tested and ana-lyzed. The abnormal grain coarsening was found at the deformation zone caused by external force. Thermal simula-tion experiments were carried out to verify the effect of pre- defomation on heat treatment microstructure of FGH97 alloy. Results show that abnormal grain growth appears during heat treatment when the deformation of FGH97 alloy reaches the critical deformation, resulting in non-homogeneous microstructure, thereby affecting the performance and application of the alloy. It is advised that operation specification should be strictly abided to avoid local defomation.
Key words: FGH97 PM superalloy ; pre-deformation; heat treatment; grain growth
粉末高温合金是采用粉末冶金工艺生产的高温合金。在制粉过程中粉末颗粒由微量液体快速凝固形成，成分偏析被限制在粉末颗粒尺寸以内，消除了常规铸造中的宏观偏析，同时快速凝固后的基金项目：北京市科技计划资助项目(Z141100002814014)
粉末具有组织均匀和晶粒细小的突出优点"-2。粉末高温合金相较于铸造和变形高温合金显著提高了热工艺性能和力学性能，是制造高性能航空发动机涡轮盘等转动部件的优选材料。中国于20世纪
作者简介：韩寿波（1983一)，男，硕士，工程师，主要从事粉末高温合金的研究工作。收稿日期：2016-08-19
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