张远辉,郑庭

• 1:泸州职业技术学院智能制造与汽车工程学院

摘要(Abstract)：

Inconel 718高温合金热变形后的微观组织显著影响其力学性能,为了能有效地调控该合金热变形后的微观组织,基于电子背散射衍射(EBSD)分析方法,研究了不同应变下Inconel 718高温合金的动态再结晶行为和微观织构的变化规律。结果表明:应变为0.2时,合金仅发生局部动态再结晶,随着应变从0.2增加到0.8,再结晶晶粒的体积分数增加,晶粒尺寸逐渐降低,当应变增加到1.2时,再结晶晶粒发生粗化;在0.2应变下,Inconel 718高温合金的动态再结晶形核机制为晶界弓出形核,当应变增加到0.6和0.8时,合金的动态再结晶形核机制主要为连续动态再结晶形核;当应变为0.2时,合金的织构组分主要由Rot. C{001}<110>、E{111}<110>、F{111}<112>、Cu{112}<111>、Rot. G{110}<110>和C{001}<100>织构组成;随着应变从0.2增加到1.2,C{001}<100>和Rot. G{110}<110>织构的体积分数逐渐增加,Rot. C{001}<110>和E{111}<110>的体积分数逐渐降低,而F{111}<112>和Cu{112}<111>织构体积分数随着应变的增加,先略微增加,随后逐渐降低。

关键词(KeyWords)： Inconel 718高温合金;动态再结晶;微观组织;微观织构;热应变

Abstract:

Keywords:

基金项目(Foundation): 泸州市科技计划资助(2022-GYF-15);; 机械结构优化及材料应用泸州市重点实验室课题(SCHYZSB-2022-08)

作者(Author): 张远辉,郑庭

DOI: 10.13289/j.issn.1009-6264.2024-0406

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