Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第27卷    第4期    总第217期    2017年4月

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文章编号:1004-0609(2017)-04-0776-05
柔性受压对钨丝-镍复合电铸层微观结构和抗拉强度的影响
钱王欢,缪小梅,秦 丰

(无锡职业技术学院 机械技术学院,无锡 214121)

摘 要: 在钨丝增强镍的电铸制造过程中,利用柔性压紧轮补充电沉积区域的电铸液,并摩擦与挤压复合电铸层,以提高钨丝-镍复合电铸层的抗拉强度。研究柔性受压条件对复合电铸层表面形貌、断口形貌和抗拉强度的影响。结果表明:柔性压紧轮对复合电铸层的摩擦与挤压作用显著减少表面孔隙并细化晶粒;其输送电铸液的作用能够防止复合电铸层内部出现空洞;柔性受压条件对复合电铸层抗拉强度的提升效果随着钨丝体积分数的增加而越发显著,当钨丝体积分数为50%时,抗拉强度提升18%,达到1558 MPa。

 

关键字: 柔性受压;电铸;抗拉强度;钨丝;镍

Influence of flexible compression on microstructure and tensile strength of W fiber reinforced Ni composites by electroforming
QIAN Wang-huan, MIAO Xiao-mei, QIN Feng

School of Mechanical Technology, Wuxi Institute of Technology, Wuxi 214121, China

Abstract:During the electroforming of W fiber-Ni composites, the flexible compression wheel was applied to replenish the electrodeposition region with fresh solution and polish the deposition, which leads to the composites with higher tensile strength. The influences of flexible compression on the surface morphology, fracture morphology and tensile strength of the electroformed W fiber-Ni composites were investigated. The results show that the surface porosity and grain size of the depositions are reduced due to the friction and extrusion from the flexible compression wheel; the effect of solution supplement by the flexible compression wheel can prevent the generation of the internal voids; flexible compression can obviously increase the tensile strength of the composite, especially at high W fiber volume fraction. When the volume fraction of the W fiber is 50%, the W fiber-Ni composite electroformed with flexible compression shows the highest tensile strength of 1558 MPa, which is improved by 18%.

 

Key words: flexible compression; electroforming; tensile strength; W fiber; nickel

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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