| HIP后续烧结对超细WC-Co硬质合金性能的影响 |
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| 引用本文： | 陈慧,栾道成,李力,李亚军.HIP后续烧结对超细WC-Co硬质合金性能的影响[J].硬质合金,2012,29(2):101-105. |
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| 作者姓名： | 陈慧 栾道成 李力 李亚军 |
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| 作者单位： | 1. 重庆文理学院材料交叉学科研究中心,重庆永川,402160
2. 西华大学材料科学与工程学院,四川成都,610039 |
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| 基金项目： | 国家科技重大专项，重庆市科委自然科学基金计划重点项目 |
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| 摘 要： | 采用高能球磨法制备超细WC-Co硬质合金。研究了1 390℃真空通Ar常规烧结后再热等静压烧结(HIP),烧结温度1 320℃,80 MPa下保温60 min对WC-Co硬质合金组织和性能的影响。结果表明:1 390℃真空通Ar烧结,可获得组织细小、综合性能好的YG8、YG10超细硬质合金。其中YG8超细硬质合金硬度达93.8 HRA,抗弯强度达2 290 MPa,YG10超细硬质合金硬度达93.3 HRA,抗弯强度达2 250 MPa。真空通Ar常规烧结再HIP能提高合金的致密度,但会使WC晶粒长大,硬度、抗弯强度、矫顽磁力等性能均下降。
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| 关 键 词： | 超细WC-Co硬质合金 真空 HIP 性能 |
Effects of HIP after Vacuum-sintering on Properties of Ultra-fine WC-Co Cemented Carbides |
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| Chen Hui
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Luan Daocheng
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Li Li
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Li Yajun.Effects of HIP after Vacuum-sintering on Properties of Ultra-fine WC-Co Cemented Carbides[J].Cemented Carbide,2012,29(2):101-105. |
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| Authors: | Chen Hui Luan Daocheng Li Li Li Yajun |
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| Affiliation: | 1.Research Center for Material Inter Disciplinary Science, Chongqing University of Arts and Science, Yongchuan Chongqing 402160, China; 2.School of Material Science and Engineering, Xihua University, Chengdu Sichuan 610039, China) |
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| Abstract: | Ultra-fine WC-Co cemented carbides were prepared by high energy ball milling in this paper. The effects of HIP（1 320 ℃, 80 MPa, keeping for 60 min） after vacuum-sintering in Ar at 1 390 ℃ on properties of ultra-fine WC-Co cemented carbides were investigated. Experimental results show that ultra-fine YG8 and YG10 cemented carbides with fine structure and good comprehensive performance can be prepared by vacuum-sintering in Ar at 1 390 ℃. The hardness of YG8 reaches 93.8 HRA and the TRS is 2 290 MPa. The hardness of YG10 reaches 93.3 HRA and the TRS is 2 250 MPa after vacuum-sintering. HIP after vacuum-sintering can improve the density of ultra-fine WC-Co cemented carbides, but the average zrain size of WC is increased and the hardness. TRS. coercive force and other oroperties are reduced. |
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| Keywords: | ultra-fine WC-Co cemented carbides vacuum-sintering in Ar HIP properties |
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