CAJ | 학술논문

利用粉末冶金法制备了Ti/W(15wt%)颗粒增强多孔复合材料,对其抗弯强度和弹性模量进行了测试.利用环境扫描电镜(ESEM)观察了微观组织、断口形貌,并分析了它们与力学性能之间的关系;利用X射线能谱仪分析了Ti/W多孔复合材料中的元素含量和分布情况.结果表明,Ti/W(15wt%)颗粒增强多孔复合材料的三点弯曲强度为603 MPa,弯曲弹性模量为26.4 GPa;复合材料存在许多孔洞且孔洞内壁圆润光滑.这些均匀分布的孔洞是获得低弹性模量复合材料的主要原因.
이용분말야금법제비료Ti/W(15wt%)과립증강다공복합재료,대기항만강도화탄성모량진행료측시.이용배경소묘전경(ESEM)관찰료미관조직、단구형모,병분석료타문여역학성능지간적관계;이용X사선능보의분석료Ti/W다공복합재료중적원소함량화분포정황.결과표명,Ti/W(15wt%)과립증강다공복합재료적삼점만곡강도위603 MPa,만곡탄성모량위26.4 GPa;복합재료존재허다공동차공동내벽원윤광활.저사균균분포적공동시획득저탄성모량복합재료적주요원인.
Ti/W(15wt%) particle reinforced porous composite was fabricated by powder-metallurgy. The bending strength and elastic modulus were tested. The relationship between fracture appearance and mechanical properties was analyzed. The microstructure of the composites was observed by environment scanning electron microscope (ESEM). Further, the content and distribution of Ti and W were analyzed by X-ray energy spectroscopy. The results show that, three points bending strength and elastic modulus are respectively 603 MPa and 26.4 GPa. The composite prepared by powder-metallurgy has many cavities, and the inner wall of the cavities is smooth. The uniform-distributed cavities of the composites cause low elastic modulus.