| 高硬度等离子弧粉末堆焊层的纤维纵向强化 |
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| 引用本文： | 王惜宝,张文钺.高硬度等离子弧粉末堆焊层的纤维纵向强化[J].天津大学学报(英文版),2000,6(2):157-161. |
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| 作者姓名： | 王惜宝 张文钺 |
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| 作者单位： | 天津大学材料科学与工程学院,天津,300072 |
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| 摘 要： | 研究一种用于高硬度等离子弧堆焊层纵向强化的纤维强化法 .通过对纤维增强等离子弧堆焊层的制备工艺及纤维加入量对堆焊层纵向断裂韧性的影响研究 ,发现选择具有高熔点和高强度的 W-Mo合金纤维作为堆焊层的增强纤维不仅具有较好的工艺可操作性 ,而且具有明显的增强作用 .在成分 (质量分数 )为 F e-2 0 % B4C复合粉末等离子弧堆焊层中加入体积分数为 4.8%的 W-Mo合金纤维 ,即可使堆焊层的纵向断裂韧性提高 3 3 .5 % .
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| 关 键 词： | W-Mo合金纤维 强化 等离子弧粉末堆焊 |
NEW LONGITUDINAL STRENGTHENING METHOD FOR
PLASMA ARC POWDER SURFACING COATING |
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| WANG Xi-bao,ZHANG Wen-yue.NEW LONGITUDINAL STRENGTHENING METHOD FOR
PLASMA ARC POWDER SURFACING COATING[J].Transactions of Tianjin University,2000,6(2):157-161. |
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| Authors: | WANG Xi-bao ZHANG Wen-yue |
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| Abstract: | A new longitudinal strengthening method for powder surfacing brittle coating using high strength metal fibres has been successfully developed.The preparing process of the fibre-reinforced hardfacing alloys and the effects of fibre's volume fraction on the composite coating's fracture toughness were investigated and analyzed.The results reveal that the high strength and high melting point Mo-W alloy fibres present not only much better processing feasibility than C- and other ceramic-fibres,but also excellent strengthening effect on the brittle coatings.The addition of 4.8% Mo-W fibres (volume fraction)to a Fe-20% B4C (weight fraction)composite plasma transferred-arc powder surfaced coating may improve the coating's longitudinal fracture toughness by 33.5%. |
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| Keywords: | Mo-W alloy fibres strengthening composite coating |
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