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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：研究生院常务副院长
其他任职：辽宁省凝固控制与数字化制备技术重点实验室主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：材料科学与工程学院
学科：材料加工工程
办公地点：研究生院；材料科学与工程学院
联系方式：tmwang@dlut.edu.cn
电子邮箱：tmwang@dlut.edu.cn
High elongation achieved by band-like distribution of reinforcements in aluminum matrix composites
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论文类型：期刊论文
发表时间：2018-10-01
发表刊物：MATERIALS CHARACTERIZATION
收录刊物：SCIE
卷号：144
页面范围：42-47
ISSN号：1044-5803
关键字：Whisker reinforced composites; Residual stress; Plastic deformation; Fracture; Band-like distribution
摘要：Ductile aluminum matrix composites reinforced by Al18B4O33 whisker (ABO) with band-like distribution (Band like Aluminum Matrix Composites, BAMCs) were fabricated by powder metallurgy and extrusion followed by annealing. The cracks tend to nucleate in the ABO-rich bands, but the band-like structure induces compressive residual stress then suppresses the crack propagation and improves the strain transferring ability in the BAMCs. The denser and smaller cracks formed in the BAMCs with higher ABO volume fraction during tensile test. These cracks play an important role in the strain non-localization process, but have negligible contribution to the tensile strain.