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首页> 外文期刊>Materials Research Letters >Non-equilibrium Grain Boundary Wetting in Cu–Ag Alloys Containing W Nanoparticles
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Non-equilibrium Grain Boundary Wetting in Cu–Ag Alloys Containing W Nanoparticles

机译:含W纳米粒子的Cu-Ag合金的非平衡晶粒边界润湿

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Adding nanoparticles to soft matter and liquids is known to provide remarkable control in the processing of novel materials. Here, we demonstrate a similar potential in crystalline solids. Specifically, we show that the addition of a high density of W nanoparticles dramatically alters the coarsening behavior of precipitate-hardened Cu–Ag alloys. First, the nanoparticles suppress precipitate growth, but far more surprisingly, they induce non-equilibrium Ag wetting layers on grain boundaries. This observation is explained using kinetic Monte Carlo simulations, which show that caging of Ag precipitates by the W nanoparticles suppresses their growth and drives the formation of wetting layers.
机译:已知将纳米粒子添加到软物质和液体中可以在新型材料的处理中提供出色的控制。在这里,我们证明了结晶固体具有相似的潜力。具体来说,我们表明,添加高密度的W纳米颗粒会显着改变沉淀硬化的Cu-Ag合金的粗化行为。首先,纳米粒子抑制了沉淀物的生长,但更令人惊讶的是,它们在晶界上引起了非平衡的银润湿层。使用动力学蒙特卡洛模拟解释了该观察结果,该模拟表明W纳米粒子对Ag沉淀物的笼养会抑制其生长并驱动润湿层的形成。

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