K452高温合金中夹杂物形态及组成试验分析  

Experimental Analysis on the Morphology and Composition of Inclusions in K452 Superalloy

作　　者：陈韩锋[1] 陈洋杨 王江[1] 卢苏君[1] 肖荣振[2] 刘俊钊[2] CHEN Han-feng;CHEN Yang-yang;WANG Jiang;LU Su-jun;XIAO Rong-zhen;LIU Jun-zhao(National Key Laboratory of Ni&Co Associated Minerals Resources Development and Comprehensive Utilization,Jinchuan Group Co.,Ltd,Jinchang 737100,Gansu,China;State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals,Lanzhou University of Technology,Lanzhou 730050,Gansu,China)

机构地区：[1]金川集团股份有限公司镍钴共伴生资源开发与综合利用全国重点实验室,甘肃金昌737100 [2]兰州理工大学省部共建有色金属先进加工与再利用国家实验室,甘肃兰州730050

出　　处：《机械研究与应用》2024年第6期8-10,18,共4页Mechanical Research & Application

基　　金：甘肃省科技计划项目-联合科研基金重点项目:燃气轮机用K452、K444高温合金母合金产品研发及应用(编号:23JRRC0009)。

摘　　要：高温合金中夹杂物的种类、数量、尺寸、形状以及合金中夹杂物之间的距离等多种变量都会对其性能产生严重的影响。该文采用电解精密铸造K452合金来分离夹杂物,运用SEM、XRD对镍基高温合金中的非金属夹杂物进行研究,并对电解分离得到的夹杂物进行定量分析。研究结果表明,电解得到的夹杂物粉末的主要成分是AlNi_(3)、Cr_(23)C_(6)、MnN_(2)和Al_(2)O_(3)及铝的氧化物以及铁的化合物,夹杂物在合金中的质量百分数为1.57%,夹杂物形貌主要为絮状、块状、尖晶石状、锥状等。夹杂物的尺寸在5~200μm范围,并且大尺寸夹杂物的存在会明显降低零件使用寿命。The variety,quantity,size and shape of inclusions in K452 superalloy and the distance between inclusions in the alloy would have a serious impact on their properties.In this paper,the inclusion in K452 alloy was separated by electrolysis.The non-metallic inclusions in superalloy were studied by SEM and XRD.Then the obtained inclusions were quantitatively analyzed.The results show that the main components of the inclusions are AlNi_(3),Cr_(23)C_(6),MnN_(2),Al_(2)O_(3),aluminum oxides and iron compounds.The mass percentage of inclusions in the alloy is 1.57%.The morphology of inclusions is flocculent,massive,spinel,cone,and so on.The size range of inclusions is from 5μm to 200μm.The presence of large size inclusions would significantly reduce the service life of parts.

关 键 词：高温合金 K452 夹杂物 形貌 

分 类 号：TG115[金属学及工艺—物理冶金]