Interfacial plasticity of a TiB2-reinforced steel matrix composite fabricated by eutectic solidification

Interfacial plasticity of a TiB2-reinforced steel matrix composite fabricated by eutectic solidification
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共晶凝固TiB2增强钢基复合材料的界面塑性

DOI:
10.1016/j.scriptamat.2014.11.015
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发表时间:
2015-04
期刊:
影响因子:
6
通讯作者:
H.L. Yi
H.L. Yi
中科院分区:
材料科学1区
文献类型:
--
作者:
M.X. Huang;B.B. He;X. Wang;H.L. Yi

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采用纳米压痕技术研究了共晶凝固法制备的钢基复合材料中TiB 2颗粒与铁素体基体之间的界面特性。在这种新型SMC中,首次揭示了在变形过程中界面脱粘之前TiB 2/铁素体界面的显著加工硬化。这种界面塑性,证明了在TiB 2/铁素体界面处产生和储存的高位错密度,是这类SMC优异延展性的原因。
The interfacial property between TiB2particles and the ferrite matrix in a steel matrix composite (SMC) fabricated by eutectic solidification was investigated by nanoindentation. The significant work hardening of TiB2/ferrite interface before interfacial debonding during deformation has been revealed for the first time in this new class of SMC. Such interfacial plasticity, proven by the high dislocation density generated and stored at the TiB2/ferrite interface, is responsible for the excellent ductility of this class of SMC.
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