Basic characterization of oxide dispersion strengthened fine-grained tungsten based materials fabricated by mechanical alloying and spark plasma sintering
Basic characterization of oxide dispersion strengthened fine-grained tungsten based materials fabricated by mechanical alloying and spark plasma sintering
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DOI：
10.1016/j.jnucmat.2011.11.039
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发表时间：
2012-12
影响因子：
3.1
通讯作者：
Zhangjian Zhou;Jun Tan;D. Qu;G. Pintsuk;M. Rödig;J. Linke
中科院分区：
文献类型：
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作者：
Zhangjian Zhou;Jun Tan;D. Qu;G. Pintsuk;M. Rödig;J. Linke
采用机械合金化和放电等离子烧结技术制备了晶粒尺寸从亚微米到几微米的细晶氧化物弥散强化（ODS）W基材料。重点研究了合金元素对合金组织、基本力学性能和瞬态高热负荷性能的影响。所制备的ODS-W基材料的显微硬度在400 ~ 1050 HV之间，抗弯强度在700 ~ 1300 MPa之间。少量Ti的加入能显著促进W-Y2 O3复合材料的致密化，减小晶粒尺寸，而Mo的加入作用较小。然而，Mo合金化的ODS-W样品显示出比Ti合金化的ODS-W样品好得多的瞬态高热负荷性能。
Fine grained oxide dispersion strengthened (ODS) W based materials with grain size from the sub-micron range to several microns have been fabricated by mechanical alloying and spark plasma sintering. The emphasis is put on the effect of alloying elements on the microstructure, basic mechanical properties and transient high heat loading performance. The micro-hardness of the fabricated ODS-W based materials are between 400HV and 1050HV, while the bending strength are between 700MPa and 1300MPa. The addition of a small amount of Ti will promote the densification and decrease the grain size of W–Y2O3composite significantly, while the addition of Mo shows less function. However, the Mo alloyed ODS-W sample shows a much better transient high heat loading performance than the Ti alloyed ODS-W sample.