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Fabrication of Fiber Reinforced Metal using Superplastic Metal Powder as Matrix

以超塑性金属粉末为基体制备纤维增强金属

基本信息

批准号：
61460202
负责人：
NISHIMURA Hisashi
金额：
$ 5.12万
依托单位：
Tokyo Metropolitan University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61460202/
关键词：
FRM MMC Composite Superplasticity Compacting Fiber-reinforcing Diffusion bonding Tensile Strength High Temperature Strength Aluminum

项目摘要

Newly developed method of fabricating FRM is discussed, which attempts to use superplastic matal powder,with has diffusion bondability, as metal matrix. In fabricating a FRM at the solid state, both failure or damage on fiber and chemical reaction at the interface must be avoided. For the purpose, superplastic zinc alloy (SPZ) powder was used used as a matrix matal of Sic fiber reinforced metal. Fine particles of SPZ were uniformly scattered into metal die and an alignment of fiber and repeated this procedure then compacted as a whole at relative low pressure and temperature. It should be noticed that temperature below 500゜C, the time of duration less than 30 min. and pressure below 150 MPa is the environmental condition in fabricating sound FRM. Assessment on mechanical properties was done by tensile test at 250゜C. Main results are following. (1) A relationship between the weight of binding powder per unit area and U.T.S., which exhibits that the weight of powder more than 0.05 g/cm^2 does not affect the strength of FRM at all. (2) A relationship between bonding pressure and U.T.S., which reveals an stable U.T.S. of FRM for bonding pressure ranging from 50 to 130 MPa.(3) A relationship between Volume fraction of fiber, Vf, and U.T.S. shows the U.T.S. riss steadily with increasing Vf. The value calculated by the rule of mixture also confirms this trends and obtained value is more than 80%. (4) The microscopic photographs of FRM showed the fibr free from damage and any failures and a functional action of powder of SPZ as binder is clearly recognized. (5) The ductility of the FRM if increased in this fabricating procedure, so 90゜ V bending work are succeeded under the temperature of 250゜C.

介绍了一种新的金属基复合材料的制备方法，即利用具有扩散连接能力的超塑性金属粉末作为金属基体。在固态制备FRM时，必须避免纤维的破坏或损伤以及界面处的化学反应。采用超塑性锌合金（SPZ）粉末作为SiC纤维增强金属的基体材料。将SPZ的细颗粒均匀地分散到金属模具和纤维排列中，并重复该过程，然后在相对较低的压力和温度下压制成整体。应注意的是，温度低于500 ℃，持续时间小于30 min，压力低于150 MPa是制造良好FRM的环境条件。在250 ℃下通过拉伸试验对力学性能进行评估。主要结果如下。(1)单位面积粘结粉重量与U.T.S.，其显示粉末重量大于0.05g/cm ^2根本不影响FRM的强度。(2)结合压力和U.T.S.之间的关系，这显示了稳定的UTS的FRM的键合压力范围从50到130 MPa。(3)纤维体积分数、Vf和U.T.S.之间的关系。显示了U.T.S.随着Vf的增加而稳步上升。用混合法则计算的值也证实了这一趋势，所得值大于80%。(4)FRM的显微照片显示纤维没有损伤和任何失效，并且清楚地认识到SPZ粉末作为粘合剂的功能作用。(5)该工艺提高了FRM的塑性，在250 ℃下成功地进行了90 mV的弯曲工作。