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VW53鎂合金室溫壓縮過程中的孿生行為研究
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作者單位:

1.中國科學(xué)技術(shù)大學(xué)納米學(xué)院;2.中國科學(xué)院金屬研究所;3.沈陽化工大學(xué)材料科學(xué)與技術(shù)學(xué)院

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基金項目:

the National Natural Science Foundation of China (No. 52171055 and No. 52371037).


Twinning behavior of VW53 magnesium alloy during compression at room temperature
Author:
Affiliation:

1.School of Nano Science and Technology, University of Science and Technology of China;2.Institute of Metal Research Chinese Academy of Sciences;3.School of Materials Science and Engineering, Shenyang University of Chemical Technology

Fund Project:

the National Natural Science Foundation of China (No. 52171055 and No. 52371037).

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    摘要:

    本文研究了Mg-5.65Gd-3.15Y-0.48Zr（VW53）鎂合金室溫壓縮過程中的孿生行為及其對組織性能的影響，通過將固溶態(tài)VW53鎂合金在室溫下進行不同應(yīng)變的壓縮實驗，然后利用光學(xué)金相顯微鏡（OM）、掃描電子顯微鏡（SEM）和電子背散射衍射（EBSD）等技術(shù)對試樣進行微觀組織觀察和分析，并測試試樣的維氏顯微硬度。結(jié)果表明：VW53鎂合金在室溫壓縮過程中，主要產(chǎn)生{10-12}拉伸孿晶和{11-21}拉伸孿晶，隨著應(yīng)變增加{10-12}孿晶會形核、生長、合并、甚至吞并整個晶粒，而{11-21}孿晶不會發(fā)生顯著的擴展合并。孿晶界可以阻礙位錯移動和分割細(xì)化晶粒，隨著應(yīng)變的增加，孿晶界相互交截和分割細(xì)化晶粒的程度提高，可以有效提高VW53鎂合金力學(xué)性能。

    Abstract:

    In the study, the twinning behavior of VW53 magnesium alloy in solid solution was studied by compression experiments under different strains at room temperature, and the effects of twinning on microstructure and properties were investigated. The microstructure of VW53 magnesium alloy was observed and analyzed by optical metallography (OM), scanning electron microscopy (SEM) and electron backscattering diffraction (EBSD). Vickers microhardness was tested. The results show that {10-12} tensile twins and {11-21} tensile twins are mainly produced during the compression process of VW53 magnesium alloy at room temperature. With the increase of strain {10-12} twins will nucleate, grow, merge, and even annex the entire grain {10-12} twins will nucleate, grow, merge, and even annex the entire grain, while {11-21} twins will not expand and merge significantly. With the increase of strain, the degree of cross-cutting of twin boundary and segmentation of refined grain increase, which can effectively improve the mechanical properties of VW53 magnesium alloy.

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引用本文

賀彥達,吳迪,張承宇,潘文宇,王儉秋,李金國,周亦胄,孫曉峰. VW53鎂合金室溫壓縮過程中的孿生行為研究[J].稀有金屬材料與工程,2024,53(9):2604~2613.[He Yanda, Wu Di, Zhang Chengyu, Pan Wenyu, Wang Jianqiu, Li Jinguo, Zhou Yizhou, Sun Xiaofeng. Twinning behavior of VW53 magnesium alloy during compression at room temperature[J]. Rare Metal Materials and Engineering,2024,53(9):2604~2613.]
DOI：10.12442/j. issn.1002-185X.20230473

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  • 收稿日期:2023-07-31
  • 最后修改日期:2023-10-10
  • 錄用日期:2023-10-18
  • 在線發(fā)布日期: 2024-09-13
  • 出版日期: 2024-09-04