鞍钢技术

定向柱晶叶片中的再结晶及诱因分析

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王莉 ¹^,² , 王迪 ¹^,² , 李佳声 ¹^,² , 刘静 ¹^,² , 董加胜 ¹^,²

鞍钢技术 | 专家论坛 2026,(5): 1-8

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鞍钢技术 |专家论坛 2026 , (5) : 1 -8

定向柱晶叶片中的再结晶及诱因分析

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王莉¹^,², 王迪¹^,², 李佳声¹^,², 刘静¹^,², 董加胜¹^,²

作者信息

^1.中国科学院金属研究所，辽宁　沈阳　110016

^2.辽宁省重型燃气轮机高温结构材料工程研究中心，辽宁　沈阳　110016

作者简介:

王莉，博士，研究员，博士生导师，2009年毕业于中国科学院材料学专业。E-mail：wangli@imr.ac.cn

Recrystallization and Inducing Factors of Directionally Solidified Columnar Grain Blades

Li WANG¹^,², Di WANG¹^,², Jiasheng LI¹^,², Jing LIU¹^,², Jiasheng DONG¹^,²

Affiliations

^1.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China

^2.Liaoning Heavy Gas Turbine High-temperature Structural Materials Engineering Research Center, Shenyang 110016, Liaoning, China

出版时间: 2026-10-10 doi: 10.3969/j.issn.1006-4613.2026.05.001

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摘要

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当定向柱晶或单晶合金中产生再结晶时，由于引入了垂直于应力方向的再结晶晶界而使合金性能急剧下降。因此，再结晶一直是航空发动机及燃气轮机叶片生产中重点关注项。对服役后的定向柱晶叶片进行观察并模拟了叶片生产不同阶段所引入的应力，探究在后续正常服役或者稍超温服役过程中的再结晶产生情况。结果表明，再结晶出现在靠近叶片叶身与叶片缘板转角处，且区域面积较大。再结晶区根据再结晶晶粒尺寸数量可分为两种，一种是单个或几个大再结晶晶粒构成的再结晶区，另一种是由多个再结晶晶粒构成的再结晶区。分析结果表明，叶片内部的再结晶在叶片服役前便已产生。合金定向凝固、机械加工及服役过程的模拟结果表明，叶片在机械加工、搬运等过程中受到磕碰或者校形时出现受力不均、变形量过大，均会造成塑性变形，进而使叶片在后续高温热处理过程中发生再结晶。

关键词

定向柱晶高温合金 / 再结晶 / 晶粒 / 高温热处理

Abstract

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Recrystallization in directionally solidified columnar grain or single-crystal alloys significantly degraded alloy performance by introducing recrystallized grain boundaries perpendicular to the stress direction. Accordingly, recrystallization represented a critical concern during the manufacturing of aeroengine and gas-turbine blades. Serviceexposed directionally columnar grained blades were examined, and stresses induced at different production stages of blades were simulated to investigate recrystallization behavior during subsequent normalservice or slightlyovertemperature service conditions. The results showed that recrystallization occurred near the fillet between the blade airfoil and shroud, with a relatively large affected zone. Based on the size and number of recrystallized grains, recrystallized regions were categorized into two types: one consisted of one or several large recrystallized grains, while the other comprised numerous fine recrystallized grains. Analytical results showed that recrystallization had already formed inside the blades before service. Simulation results of directional solidification, machining and service processes for the alloy demonstrated that collisions during machining and handling, as well as uneven loading and excessive deformation during straightening, would cause plastic deformation of blades and further induce recrystallization during subsequent hightemperature heat treatment.

Key words

directionally solidified columnar superalloy / recrystallization / grain / high-temperature heat treatment

引用本文

王莉, 王迪, 李佳声, 刘静, 董加胜. 定向柱晶叶片中的再结晶及诱因分析. 鞍钢技术, 2026 , (5) : 1 -8 . DOI: 10.3969/j.issn.1006-4613.2026.05.001

Li WANG, Di WANG, Jiasheng LI, Jing LIU, Jiasheng DONG. Recrystallization and Inducing Factors of Directionally Solidified Columnar Grain Blades[J]. Angang Technology, 2026 , (5) : 1 -8 . DOI: 10.3969/j.issn.1006-4613.2026.05.001

基金

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国家自然科学基金面上项目(51871210)

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2026年第卷第5期

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doi: 10.3969/j.issn.1006-4613.2026.05.001

首发时间：2026-10-27
出版时间：2026-10-10

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修回日期：2026-08-30

基金

国家自然科学基金面上项目(51871210)

作者信息

^1.中国科学院金属研究所，辽宁　沈阳　110016

^2.辽宁省重型燃气轮机高温结构材料工程研究中心，辽宁　沈阳　110016

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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