摘要
采用原位自生的方法成功制备了TiB2/A356复合材料,研究了不同TiB2颗粒含量对TiB2/A356复合材料组织及力学性能的影响。结果表明,TiB2颗粒的尺寸为150~560nm时对复合材料有显著地细化、抑制枝晶长大的作用。随着TiB2颗粒含量的增加,复合材料的强度随之升高而伸长率降低。复合材料的屈服强度为242~265 MPa,抗拉强度为270~297 MPa,伸长率为4.2%~5.8%。
The in-situ TiB2/A356 was synthesised successfully to understand effects of different TiB2 addition on the microstructure and mechanical properties of TiB2/A356 composites.The results indicate that with the reinforced TiB2 particles of 150~560nm,grain size in the composites is refined obviously,meanwhile,dendrite growth is inhibited.The strength of the composites is increased while elongation is decreased with the increase of TiB2 addition.The yield strength,tensile strength and elongation of TiB2/A356 composites reach 242~265 MPa,270~297 MPa and 4.2%~5.8%,respectively.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2016年第9期913-917,共5页
Special Casting & Nonferrous Alloys
作者简介
徐佐,男，1965年出生,高级经济师，中信戴卡股份有限公司，河北秦皇岛（066000）,电话：03355358588，E—mail：dieter．dai@dicastal．com
通信作者：刘春海，男,1963年出生,教授级高级工程师，中信戴卡股份有限公司工程技术研究院，河北秦皇岛（066000）,电话：03355358286,E-mail：liuchunhai@dicastal．com
