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首页> 外文期刊>High temperature materials and processes >Observation of Anisotropy of Creep Fracture Using Small Punch Test for Al-Al_4C_3 System Produced by Equal Channel Angular Pressing
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Observation of Anisotropy of Creep Fracture Using Small Punch Test for Al-Al_4C_3 System Produced by Equal Channel Angular Pressing

机译:等冲角挤压Al-Al_4C_3系统小冲模试验蠕变断裂的各向异性

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The anisotropy of the creep properties and fracture using small punch tests for the Al-Al_4C_3 system produced by ECAP were analysed in this work. Small punch creep tests under constant force were performed at the temperature of 623 K. It was shown that the fracture results, i.e. time to fracture and deflection at fracture were different in specimens with different orientation with respect to the axis of ECAP deformation. Fracture surface analysis of the tested small punch specimens was conducted. Fractures have transcrystalline ductile character. The fracture dimples are equiaxial as well as elongated in the dependence on strain direction. Fracture dimples are of two categories, the small ones sized from 0.1 to 0.5 μm and large ones ranging from 3 to 6 μm.
机译:在这项工作中,分析了使用ECAP生产的Al-Al_4C_3系统的小冲孔试验的蠕变特性和断裂的各向异性。在623 K的温度下,在恒力下进行了小的冲头蠕变试验。结果表明,相对于ECAP变形轴方向不同的试样,其断裂结果(即断裂时间和断裂挠度)不同。进行了测试的小冲头试样的断裂表面分析。断裂具有跨晶延展性。断裂凹痕是等轴的,并且在取决于应变方向的情况下也伸长。断裂酒窝分为两类,小酒窝尺寸为0.1至0.5μm,大酒窝尺寸为3至6μm。

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