材料科学
微观结构
合金
极限抗拉强度
成核
粒度
延展性(地球科学)
钛合金
冶金
相(物质)
扫描电子显微镜
复合材料
蠕动
化学
有机化学
作者
Jiafeng Tang,Hengjun Luo,Bin Wu,Wenhao Liu,Rong Yu,Danyang Chen,Yulin Qin,Ning Zhang,Hao Fang,Hao Deng,Longqing Chen,Jun Zhu,Ming Yin
出处
期刊:Materials
[MDPI AG]
日期:2024-12-23
卷期号:17 (24): 6294-6294
摘要
TB18 is a newly developed high-strength metastable β-titanium alloy, commonly used in aerospace structural materials, which demands high mechanical performance. By altering the alloy’s microstructure, heat treatment can affect its mechanical characteristics. The alloy was solution treated for one to four hours at 870 °C in order to examine the impact of solution treatment duration. Using X-ray diffraction (XRD) and scanning electron microscopy (SEM), the effects of solution treatment time on the β-phase grain size and its effect on stress distribution during tensile testing were examined. The findings showed that stress concentration during the tensile process was successfully decreased by refining the β-phase grain size. Sample solutions treated for two hours at 870 °C were then aged at various temperatures (510 °C, 520 °C, 530 °C, and 540 °C) to examine the impact of aging temperature. While the mass proportion of the α-phase first climbed and subsequently declined, reaching its maximum at 530 °C, the size of the α-phase increased monotonically as the aging temperature increased. The varies of mass fraction is associated with how the aging temperature affects α-phase nucleation. Tensile studies on TB18 alloy aged at various temperatures showed that while the alloy’s ductility reduced, its strength increased as the aging temperature rose. The Hall-Petch relationship explains this tendency.
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