Comparative study of IN600 superalloy produced by two powder metallurgy technologies: Argon Atomizing and Plasma Rotating Electrode Process
Comparative study of IN600 superalloy produced by two powder metallurgy technologies: Argon Atomizing and Plasma Rotating Electrode Process
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DOI：
10.1016/j.vacuum.2018.07.050
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发表时间：
2018-10-01
期刊：
影响因子：
4
通讯作者：
Yao, Caogen
中科院分区：
文献类型：
--
作者：
Chen, Yue;Zhang, Jiayi;Yao, Caogen
对采用氩雾化(AA)法和等离子旋转电极法(PREP)法制备的两种IN600合金粉末产品的显微组织、粉末球形度、缺陷和力学性能进行了比较。 AAed IN600粉末内部形貌主要由细胞状枝晶组成，且枝晶不连续且无序。同时，PREPed IN600粉末的内部形貌主要由树枝状枝晶组成。 AAed IN600粉末的粒度范围为40至150μm，相比之下，PREPed IN600粉末的粒度范围为70至130μm。 PREPed粉末颗粒的球形度优于AAed粉末颗粒。 AAed IN600合金粉末中存在大的空心粉末，而PREPed IN600合金粉末中不存在大的空心粉末。 AAed和PREPed IN600合金在热等静压和相同热处理条件下均表现出相当的拉伸强度和屈服强度，但PREPed合金的断面收缩率（15.5%）高于AAed合金（14.6%），表明PREPed IN600合金的塑性优于AAed IN600合金。
Two type products of IN600 alloy powders fabricated by Argon Atomizing (AA) and Plasma Rotating Electrode Process (PREP) were compared, in terms of microstructure, sphericity of powder, defects and mechanical properties. The interior morphology of AAed IN600 powder was mainly composed of cellular dendrites, and the dendrites were discontinuous and disordered. While, the interior morphology of PREPed IN600 powder was mainly composed of dendritic dendrites. The granularity of AAed IN600 powder ranged from 40 to 150 mu m, in comparison that of PREPed IN600 powder ranged from 70 to 130 mu m. The sphericity of PREPed powder particles were better than that of AAed powder particles. Large hollow powders existed in AAed IN600 alloy powder, while PREPed IN600 alloy powder did not exist. The AAed and PREPed IN600 alloy both exhibit equivalent tensile strength and yield strength after hot isostatic pressing and same heat treatment condition, but the section shrinkage rate of PREPed alloy (15.5%) was higher than that of AAed alloy (14.6%), indicating that the plasticity of PREPed IN600 alloy was better than that of AAed IN600 alloy.