Al11.5Cr16Fe17Ni51.5V4高熵合金中L12结构 纳米共格相的析出行为及其对力学性能的影响

doi:10.13251/j.issn.0254-6051.2024.11.005

金属热处理 ›› 2024, Vol. 49 ›› Issue (11): 29-37.DOI: 10.13251/j.issn.0254-6051.2024.11.005

Al_11.5Cr₁₆Fe₁₇Ni_51.5V₄高熵合金中L1₂结构纳米共格相的析出行为及其对力学性能的影响

印家辉, 林耀军

武汉理工大学材料科学与工程学院, 湖北武汉 430070

收稿日期:2024-06-05 修回日期:2024-09-02 出版日期:2024-11-25 发布日期:2025-01-09
通讯作者: 林耀军,教授,博士,E-mail:yjlin@whut.edu.cn
作者简介:印家辉(1999—),男,硕士研究生,主要研究方向为高熵合金,E-mail:597450108@qq.com。

Precipitation behavior of coherent nanoscale phase with L1₂ structure and its effect on mechanical properties of Al_11.5Cr₁₆Fe₁₇Ni_51.5V₄ high-entropy alloy

Yin Jiahui, Lin Yaojun

School of Materials Science and Engineering, Wuhan University of Technology, Wuhan Hubei 430070, China

Received:2024-06-05 Revised:2024-09-02 Online:2024-11-25 Published:2025-01-09

摘要/Abstract

摘要： 以Al_11.5Cr₁₆Fe₁₇Ni_51.5V₄高熵合金为研究对象,研究了固溶处理成单相固溶体的该合金在600 ℃时效不同时间后的微观组织和拉伸性能。结果表明,经1150 ℃保温7 min再结晶退火/固溶处理后,该合金组织为单相FCC固溶体。600 ℃时效处理后,形成了具有L1₂结构的纳米尺寸球状富Ni、Al元素的γ′-Ni₃Al析出相。随时效时间延长,γ′析出相的尺寸和体积分数单调增加,晶粒尺寸轻微长大。合金的屈服强度从306 MPa增加到863 MPa,抗拉强度从560 MPa增加到1272 MPa,同时合金保持了良好的韧性(均匀延伸率34.1%~17.7%)。时效过程中,合金强度的增加,主要归因于γ′相的析出强化,其析出强化的机制为位错切过机制。γ′相析出强化效应随γ′相尺寸和体积分数的增加而增加。合金的良好韧性取决于γ′析出相的共格特征和极小的纳米尺寸,降低了析出相/基体界面的应力集中。

关键词: 高熵合金, 时效处理, 析出强化, L1₂结构γ′析出相, 力学性能

Abstract: Selecting Al_11.5Cr₁₆Fe₁₇Ni_51.5V₄ high-entropy alloy as the research object, the microstructure and tensile properties of the alloy with single-phase solid solution treated by solution treatment were studied after aging at 600 ℃ for different time. The results show that the microstructure of the alloy is single-phase FCC solid solution after recrystallization annealing/solution treatment at 1150 ℃ for 7 min. After aging at 600 ℃, nano-sized spherical Ni-rich and Al-rich γ′-Ni₃Al precipitates with L1₂ structure are formed. With the increase of aging time, the size and volume fraction of the precipitated γ′ phase increase monotonously, and the grain size increases slightly. The yield strength of the alloy increases from 306 MPa to 863 MPa, the tensile strength increases from 560 MPa to 1272 MPa, and the alloy maintains good toughness (uniform elongation of 34.1%-17.7%). During aging, the increase of strength is mainly attributed to the precipitation strengthening of the γ′ phase, where the mechanism is the dislocation cutting. The γ′ precipitation strengthening effect increases with the increase of size and volume fraction of the precipitated γ′ phase. The good toughness of the alloy depends on the coherent characteristics of the precipitated γ′ phase and the extremely small nano-size, which reduces the stress concentration at the precipitated phase/matrix interface.

Key words: high-entropy alloy, aging treatment, precipitation strengthening, γ′precipitates with L1₂ structure, mechanical properties

中图分类号:

TG146

印家辉, 林耀军. Al_11.5Cr₁₆Fe₁₇Ni_51.5V₄高熵合金中L1₂结构纳米共格相的析出行为及其对力学性能的影响[J]. 金属热处理, 2024, 49(11): 29-37.

Yin Jiahui, Lin Yaojun. Precipitation behavior of coherent nanoscale phase with L1₂ structure and its effect on mechanical properties of Al_11.5Cr₁₆Fe₁₇Ni_51.5V₄ high-entropy alloy[J]. Heat Treatment of Metals, 2024, 49(11): 29-37.

参考文献

[1]Yeh J W. Nano-structured high-entropy alloys[J]. Knowledge Bridge, 2003, 40: 1-2.
[2]Senkov O N, Wilks G B, Miracle D B, et al. Refractory high-entropy alloys[J]. Intermetallics, 2010, 18(9): 1758-1765.
[3]Liu W H, Wu Y, He J Y, et al. Grain growth and the Hall-Petch relationship in a high-entropy FeCrNiCoMn alloy[J]. Scripta Materialia, 2013, 68(7): 526-529.
[4]Zhang T W, Ma S G, Zhao D, et al. Simultaneous enhancement of strength and ductility in a NiCoCrFe high-entropy alloy upon dynamic tension: Micromechanism and constitutive modeling[J]. International Journal of Plasticity, 2020, 124: 226-246.
[5]Gludovatz B, Hohenwarter A, Thurston K V S, et al. Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures[J]. Nature Communications, 2016, 7(1): 10602.
[6]Ding Q, Zhang Y, Chen X, et al. Tuning element distribution, structure and properties by composition in high-entropy alloys[J]. Nature, 2019, 574: 223-227.
[7]He F, Chen D, Han B, et al. Design of D0₂₂ superlattice with superior strengthening effect in high entropy alloys[J]. Acta Materialia, 2019, 167: 275-286.
[8]Freudenberger J, Thiel F, Utt D, et al. Solid solution strengthening in medium-to high-entropy alloys[J]. Materials Science and Engineering A, 2022, 861: 144271.
[9]Fu Z, Chen W, Wen H, et al. Microstructure and strengthening mechanisms in an FCC structured single-phase nanocrystalline Co₂₅Ni₂₅Fe₂₅Al_{7. 5}Cu_{17. 5} high-entropy alloy[J]. Acta Materialia, 2016, 107: 59-71.
[10]Ming K, Bi X, Wang J. Precipitation strengthening of ductile Cr₁₅Fe₂₀Co₃₅Ni₂₀Mo₁₀ alloys[J]. Scripta Materialia, 2017, 137: 88-93.
[11]He J Y, Wang H, Huang H L, et al. A precipitation-hardened high-entropy alloy with outstanding tensile properties[J]. Acta Materialia, 2016, 102: 187-196.
[12]Pan Y, Dong A, Zhou Y, et al. Enhanced strength-ductility synergy in a novel V-containing γ″-strengthened CoCrNi-based multi-component alloy[J]. Materials Science and Engineering A, 2021, 816: 141289.
[13]Zhao Y L, Yang T, Zhu J H, et al. Development of high-strength Co-free high-entropy alloys hardened by nanosized precipitates[J]. Scripta Materialia, 2018, 148: 51-55.
[14]Chen D, He F, Han B, et al. Synergistic effect of Ti and Al on L1₂-phase design in CoCrFeNi-based high entropy alloys[J]. Intermetallics, 2019, 110: 106476.
[15]Oblak J M, Paulonis D F, Duvall D S. Coherency strengthening in Ni base alloys hardened by D0₂₂ γ′ precipitates[J]. Metallurgical and Materials Transactions B, 1974, 5: 143-153.
[16]Liang Y J, Wang L, Wen Y, et al. High-content ductile coherent nanoprecipitates achieve ultrastrong high-entropy alloys[J]. Nature Communications, 2018, 9(1): 4063.
[17]Zhu Z C, Wang M L, He T, et al. Ultrastrong high-ductility Ni₃₅Co₃₅Fe₁₀Al₁₀Ti₈B₂ high-entropy alloy strengthened with super-high concentration L1₂ precipitates[J]. Advanced Engineering Materials, 2023, 20: 2300689.
[18]Guo S, Ng C, Lu J, et al. Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys[J]. Journal of Applied Physics, 2011, 109(10): 213.
[19]Kamikawa N, Sato K, Miyamoto G, et al. Stress-strain behavior of ferrite and bainite with nano-precipitation in low carbon steels[J]. Acta Materialia, 2015, 83: 383-396.
[20]Petch N J. The orientation relationships between cementite and α-iron[J]. Acta Crystallographica, 1953, 6(1): 96.
[21]Tang Z, Gao M C, Diao H, et al. Aluminum alloying effects on lattice types, microstructures, and mechanical behavior of high-entropy alloys systems[J]. JOM, 2013, 65: 1848-1858.
[22]Wen H, Topping T D, Isheim D, et al. Strengthening mechanisms in a high-strength bulk nanostructured Cu-Zn-Al alloy processed via cryomilling and spark plasma sintering[J]. Acta Materialia, 2013, 61(8): 2769-2782.
[23]Qin S, Yang M, Jiang P, et al. Excellent tensile properties induced by heterogeneous grain structure and dual nanoprecipitates in high entropy alloys[J]. Materials Characterization, 2022, 186: 111779.
[24]Booth-Morrison C, Dunand D C, Seidman D N. Coarsening resistance at 400 ℃ of precipitation-strengthened Al-Zr-Sc-Er alloys[J]. Acta Materialia, 2011, 59(18): 7029-7042.
[25]Ardell A J. Precipitation hardening[J]. Metallurgical Transactions A, 1985, 16: 2131-2165.
[26]Pollock T M, Argon A S. Creep resistance of CMSX-3 nickel base superalloy single crystals[J]. Acta Metallurgica et Materialia, 1992, 40(1): 1-30.

Al_11.5Cr₁₆Fe₁₇Ni_51.5V₄高熵合金中L1₂结构纳米共格相的析出行为及其对力学性能的影响

Precipitation behavior of coherent nanoscale phase with L1₂ structure and its effect on mechanical properties of Al_11.5Cr₁₆Fe₁₇Ni_51.5V₄ high-entropy alloy

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	任诚, 闵小华, 费琪. β型Ti-15Mo合金中α相变体选择[J]. 金属热处理, 2024, 49(9): 1-10.
[2]	周浩, 王帅, 曾燕屏, 马志宝, 周德, 郭德瑞, 董树青. 长时在役Inconel 783高温合金螺栓的显微组织和力学性能[J]. 金属热处理, 2024, 49(9): 36-42.
[3]	陈子健, 林业佳, 李传强, 邓仁昡, 董勇, 章争荣. 微合金化调控7075铝合金的微观组织与力学性能[J]. 金属热处理, 2024, 49(9): 58-63.
[4]	任广笑, 王超, 曹喜娟, 王凯, 王红霞, 程伟丽, 牛晓峰. 时效处理对Mg-Y-Gd-Zn-Zr合金中LPSO相演变及性能的影响[J]. 金属热处理, 2024, 49(9): 96-102.
[5]	任鹏帅, 秦凤, 周骞, 赵雷杰, 崔护, 彭子奥, 武常生. 等温淬火对含铝无碳化物贝氏体钢组织和性能的影响[J]. 金属热处理, 2024, 49(9): 103-109.
[6]	张宇, 李圣阳, 魏晓蓼, 柴志松, 李泳. 铬合金化Q&P钢的热处理工艺优化与碳配分行为[J]. 金属热处理, 2024, 49(9): 110-116.
[7]	张青科, 诸汇涛, 陈根保, 陈立田, 夏亚金, 胡方勤, 宋振纶. 形变热处理对新型无Ti马氏体时效钢焊缝组织与力学性能的影响[J]. 金属热处理, 2024, 49(9): 117-124.
[8]	黄惠毅, 乐永康, 廖斌, 秦颐鸣, 李飞龙, 戴小杰, 杨超. 时效温度对6101铝合金组织性能的影响[J]. 金属热处理, 2024, 49(9): 139-143.
[9]	夏琳燕, 史湘琴, 刘逸卿, 周模豪, 邓蔚. 时效对铸造Al-Si-Cu-Mg合金力学性能和耐蚀性能的影响[J]. 金属热处理, 2024, 49(9): 152-157.
[10]	万志健, 安涛, 于文坛, 刘学华, 童乐, 赵海. 热处理工艺对42CrMo-R钢轮箍组织及力学性能的影响[J]. 金属热处理, 2024, 49(9): 158-164.
[11]	涂正平, 吴逸飞, 于安华, 陈晓伟, 王维俊. 超导磁体热处理对N50H不锈钢铠甲力学性能的影响[J]. 金属热处理, 2024, 49(9): 165-168.
[12]	赖春明, 李琴, 周家林, 吴兴欢, 黄艳. 焊后热处理对热丝TIG焊接10Cr9Mo1VNb锅炉用钢组织性能的影响[J]. 金属热处理, 2024, 49(9): 169-175.
[13]	刘强, 盛智勇, 张超, 李杰, 陈泽, 陈送义, 陈康华. 预变形对7085超强铝合金环件组织与性能的影响[J]. 金属热处理, 2024, 49(9): 176-184.
[14]	徐锋, 孙强, 贾云浩. 时效处理对15-5PH不锈钢室温和低温力学性能的影响[J]. 金属热处理, 2024, 49(9): 191-197.
[15]	马蓼奕, 董志, 杨立新, 李世键, 崔晶, 康冲. 淬火转移时间对16CrSiNi钢回火组织和性能的影响[J]. 金属热处理, 2024, 49(9): 198-203.