A286高温合金板材室温成形极限及组织研究

李旭健; 高达; 殷小健; 高靖靖; 柯书忠; 赵文龙; 马叙

doi:10.3969/j.issn.1674-6457.2025.10.024

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精密成形工程 ›› 2025, Vol. 17 ›› Issue (10) : 234-242. DOI: 10.3969/j.issn.1674-6457.2025.10.024

高温合金成形

A286高温合金板材室温成形极限及组织研究

李旭健¹, 高达², 殷小健^1,*, 高靖靖¹, 柯书忠¹, 赵文龙¹, 马叙²

作者信息 +

Room Temperature Formability and Microstructure of A286 Superalloy Sheet

LI Xujian¹, GAO Da², YIN Xiaojian^1,*, GAO Jingjing¹, KE Shuzhong¹, ZHAO Wenlong¹, MA Xu²

Author information +

文章历史 +

摘要

目的探究A286高温合金板材在室温下的成形性能和微观组织。方法对A286合金板材在室温下的成形性能及成形机理进行研究,通过对A286金属板材进行钢模胀形实验、拉伸试验,并且利用X射线衍射、OM、SEM、EDS等表征方法,系统评估板材的成形性能并观察显微组织特征,进而探究微观组织与力学性能之间的关联。结果得到了A286高温合金板材的成形极限图（FLD）、拉伸曲线以及断口微观组织形貌。结论 A286板材成形性能良好且不同厚度A286板材的成形性能随厚度的增加呈上升趋势;A286板材断裂是典型的韧性断裂,其屈服韧性与拉伸速率有关。随着拉伸速率的增加（从0.001 s^-1到0.01 s^-1）,板材的伸长率、屈服强度上升,抗拉强度基本不变,板材断裂断口更加不平整且韧窝数量减少,呈现逐渐向脆性断裂转变的趋势。

Abstract

The work aims to investigate the formability and microstructure of A286 superalloy sheet at room temperature. The forming performance and forming mechanism of A286 alloy sheet at room temperature were studied. Through the steel mold expansion experiment and tensile test of A286 metal sheet, and with X-ray diffraction, OM, SEM, EDS and other characterization methods, the forming performance and microstructure characterization of the sheet were obtained, and the relationship between microstructure and mechanical properties was analyzed. The forming limit diagram (FLD), tensile curve and fracture microstructure of A286 superalloy sheet were obtained. A286 sheet exhibits good formability, with its performance showing an improving trend as the sheet thickness increases. The fracture of A286 sheet is characterized by typical ductile fracture, with its yield toughness being dependent on the tensile rate. As the tensile rate increases from 0.001 s^-1 to 0.01 s^-1, the elongation and yield strength of the sheet increase, while the tensile strength remains largely unchanged. The fracture surface becomes more irregular with a reduction in the number of dimples, indicating a transitional trend toward brittle fracture.

导出引用

李旭健, 高达, 殷小健, 高靖靖, 柯书忠, 赵文龙, 马叙. A286高温合金板材室温成形极限及组织研究[J]. 精密成形工程. 2025, 17(10): 234-242 https://doi.org/10.3969/j.issn.1674-6457.2025.10.024

LI Xujian, GAO Da, YIN Xiaojian, GAO Jingjing, KE Shuzhong, ZHAO Wenlong, MA Xu. Room Temperature Formability and Microstructure of A286 Superalloy Sheet[J]. Journal of Netshape Forming Engineering. 2025, 17(10): 234-242 https://doi.org/10.3969/j.issn.1674-6457.2025.10.024

中图分类号： TG314

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