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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >Basic characterization of oxide dispersion strengthened fine-grained tungsten based materials fabricated by mechanical alloying and spark plasma sintering
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Basic characterization of oxide dispersion strengthened fine-grained tungsten based materials fabricated by mechanical alloying and spark plasma sintering

机译：机械合金化和火花等离子体烧结制备的氧化物弥散强化的细粒钨基材料的基本特性

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摘要

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 400 HV and 1050 HV, while the bending strength are between 700 MPa and 1300 MPa. The addition of a small amount of Ti will promote the densification and decrease the grain size of W-Y _2O _3 composite 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.
机译：通过机械合金化和火花等离子体烧结已经制造了晶粒尺寸从亚微米到几微米的细颗粒氧化物弥散强化（ODS）W基材料。重点放在合金元素对组织，基本机械性能和瞬时高热负荷性能的影响上。所制造的基于ODS-W的材料的显微硬度在400HV与1050HV之间，而弯曲强度在700MPa与1300MPa之间。添加少量的Ti将促进W-Y _2O _3复合材料的致密化并减小其晶粒尺寸，而添加的Mo则显示较少的功能。但是，Mo合金化的ODS-W样品显示出比Ti合金化的ODS-W样品更好的瞬态高热负荷性能。

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