激光粉末床熔融法制备Inconel 625合金高温拉伸性能的各向异性演化

IF 2.9 2区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
Jiaqing Liu, Libo Zhou, Zeai Peng, Boyi Chen, Yijie Tan, Jian Chen, Weiying Huang, Cong Li
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引用次数: 0

摘要

研究了激光粉末床熔合法制备的Inconel 625合金在不同测试温度下的各向异性拉伸性能,重点研究了各向异性在高温下的演变。在垂直方向(90°试样)上形成具有(111)织构的柱状晶粒,在水平方向(0°试样)上形成具有(100)织构的大等轴晶粒。在45°试样中,可以观察到大量的等轴晶和少量具有(111)织构的柱状晶。0°取向的试样具有最高的抗拉强度,而90°取向的试样具有最大的伸长率。相反,45°的样本显示最不利的整体性能。随着试验温度从室温升高到600℃,0°~ 45°试样的极限抗拉强度、屈服强度和塑性各向异性率分别从8.98降至6.96%、2.36降至1.28%、19.93降至12.23%,0°~ 90°试样的极限抗拉强度、屈服强度和塑性各向异性率分别从4.87降至4.03%、11.88降至7.21%和14.11降至6.89%,主要原因是取向柱状晶粒的恢复。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Anisotropy Evolution of Tensile Properties in Laser Powder Bed Fusion-Fabricated Inconel 625 Alloy at High Temperature

This work investigated the anisotropy tensile properties of Inconel 625 alloy fabricated by laser powder bed fusion (LPBF) under various tests temperature, focusing the anisotropy evolution during the high temperature. The microstructure contained columnar grains with (111) texture in the vertical plane (90° sample), while a large equiaxed grain with (100) texture was produced in the horizontal plane (0° sample). As for 45° sample, a large number of equiaxed grains and a few columnar grains with (111) texture can be observed. The sample produced at a 0° orientation demonstrates the highest tensile strength, whereas the 90° sample exhibits the greatest elongation. Conversely, the 45° sample displays the least favorable overall performance. As the tests temperature increased from room temperature to 600 °C, the anisotropy rate of ultimate tensile strength, yield strength and ductility between 0° and 45° samples, decreased from 8.98 to 6.96%, 2.36 to 1.28%, 19.93 to 12.23%, as well as between 0° and 90° samples decreased from 4.87 to 4.03%, 11.88 to 7.21% and 14.11 to 6.89%, respectively, because of the recovery of oriented columnar grains.

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来源期刊
Acta Metallurgica Sinica-English Letters
Acta Metallurgica Sinica-English Letters METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
6.60
自引率
14.30%
发文量
122
审稿时长
2 months
期刊介绍: This international journal presents compact reports of significant, original and timely research reflecting progress in metallurgy, materials science and engineering, including materials physics, physical metallurgy, and process metallurgy.
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