Enhanced plasticity in Mg-based bulk metallic glass composite reinforced with ductile Nb particles
Enhanced plasticity in Mg-based bulk metallic glass composite reinforced with ductile Nb particles
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DOI：
10.1063/1.2423234
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发表时间：
2006-12-25
影响因子：
4
通讯作者：
Hu, Z. Q.
中科院分区：
文献类型：
--
作者：
Pan, D. G.;Zhang, H. F.;Hu, Z. Q.
本文报道了在熔炼过程中简单添加Nb颗粒增强镁基非晶复合材料的合成。韧性Nb颗粒有效地阻止剪切带的传播，并且在屈服时，变形的Nb颗粒将载荷均匀地分布到周围的玻璃基质中，以促进丰富的二次剪切带的起始和分支。与以前的镁基金属玻璃复合材料断裂时塑性很小相比，该复合材料显示出很大的抗裂纹扩展能力。900 MPa的高强度和12.1 ± 2%的大塑性使其与优异的Zr基或Ti基金属玻璃复合材料相当。(c)2006年，美国物理学会。
The authors report the synthesis of Mg-based metallic glass composite reinforced with Nb particles which are simply added during melting process. The ductile Nb particles effectively impede shear band propagation and upon yielding, deformed Nb particles distribute the load uniformly to the surrounding glassy matrix to promote the initiation and branching of abundant secondary shear bands. In contrast to the previous Mg-based metallic glass composites which fracture with very little plasticity, the composite shows great resistance to crack growth. The high strength of 900 MPa and large plasticity of 12.1 +/- 2% have made it comparable to excellent Zr- or Ti-based metallic glass composite. (c) 2006 American Institute of Physics.