Ductile-Phase Toughening in TiBw/Ti-Ti3Al Metallic-Intermetallic Laminate Composites

Ductile-Phase Toughening in TiBw/Ti-Ti3Al Metallic-Intermetallic Laminate Composites
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TiBw/Ti-Ti3Al 金属-金属间层压复合材料中的延性相增韧

DOI:
10.1007/s11661-015-3025-y
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发表时间:
2015-06
期刊:
Metallurgical and Materials Transactions A
影响因子:
--
通讯作者:
Nutt Steven
Nutt Steven
中科院分区:
其他
文献类型:
--
作者:
Wu Hao;Jin Bo Cheng;Geng Lin;Fan Guohua;Cui Xiping;Huang Meng;Hicks Rodrigo Mier;Nutt Steven

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探讨了由Ti3Al和TiBw/Ti交替组成的金属-金属间层合(MIL)复合材料的韧性相增韧概念。采用原位热压和反应退火法制备了TiBw/Ti层以增强脆性Ti3Al的韧性。与单片Ti3Al相比,MIL复合材料的断裂韧性和拉伸伸长率都有显著提高,这是由于原位界面的应力重分布和应变离域导致的。
The concept of ductile-phase toughening was explored in a metallic-intermetallic laminate (MIL) composite comprising alternating layers of Ti3Al and TiBw/Ti. The laminates, in which the TiBw/Ti layers were intended to impart toughness to the brittle Ti3Al, were fabricatedin situby hot pressing and reaction annealing. Compared with monolithic Ti3Al, the MIL composite exhibited marked increases in both fracture toughness and tensile elongation because of stress redistribution and strain delocalization byin situinterfaces.
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