p）和β相微織構(gòu)。結(jié)果表明，局部組織不均勻性和局部織構(gòu)之間具有緊密聯(lián)系。引入角θ定量分析αp相與相鄰β相偏離Burgers取向關(guān)系程度，發(fā)現(xiàn)在具有粗大β晶粒的區(qū)域內(nèi)具有較小θ角的αp/β界面體積分?jǐn)?shù)高于完全再結(jié)晶的β晶粒區(qū)域。αp相和β相之間的取向關(guān)系不僅影響原始β晶粒變形過程中再結(jié)晶，還通過影響變體選擇對(duì)轉(zhuǎn)變?chǔ)料嘈蚊伯a(chǎn)生影響。"/>

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變形近 α 鈦合金局部組織不均勻性與局部織構(gòu)的關(guān)聯(lián)性
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作者單位:

1.中國(guó)科學(xué)技術(shù)大學(xué) 材料科學(xué)與工程學(xué)院，遼寧 沈陽 110016;2.中國(guó)科學(xué)院 金屬研究所，遼寧 沈陽 110016

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基金項(xiàng)目:

國(guó)家科技重大專項(xiàng)（J2019-VI-0005-0119）


Connection Between Local Microstructure Heterogeneity and Local Texture in Deformed Near-α Titanium Alloy
Author:
Affiliation:

1.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China;2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Fund Project:

National Science and Technology Major Project (J2019-VI-0005-0119); Youth Innovation Promotion Association CAS (2020193)

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    摘要:

    一種具有雙態(tài)組織的近α鈦合金經(jīng)壓縮變形后微觀組織呈現(xiàn)出不均勻性。利用電子背散射衍射技術(shù)分析了局部織構(gòu)對(duì)組織形貌的影響，通過取向數(shù)據(jù)處理研究了初生α相（αp）和β相微織構(gòu)。結(jié)果表明，局部組織不均勻性和局部織構(gòu)之間具有緊密聯(lián)系。引入角θ定量分析αp相與相鄰β相偏離Burgers取向關(guān)系程度，發(fā)現(xiàn)在具有粗大β晶粒的區(qū)域內(nèi)具有較小θ角的αp/β界面體積分?jǐn)?shù)高于完全再結(jié)晶的β晶粒區(qū)域。αp相和β相之間的取向關(guān)系不僅影響原始β晶粒變形過程中再結(jié)晶，還通過影響變體選擇對(duì)轉(zhuǎn)變α相形貌產(chǎn)生影響。

    Abstract:

    A heterogeneous microstructure was found in a compressed near-α titanium alloy with a bimodal microstructure. The effect of the local texture on microstructural morphology was analyzed by electron backscattering diffraction techniques. Advanced orientation data processing was performed to study the micro-texture of primary α (αp) and β. The results show that there is a close relationship between local microstructure heterogeneity and local texture. The deviation angle θ can be used to quantitatively evaluate the orientation relationship (OR) between αp and the surrounding β grains from Burgers OR. The fractions of the αp/β boundary with small θ are always higher in the regions where coarse β grains exist than in the regions where the β grain is completely recrystallized. The orientation relationship between αp and β affects the recrystallization of prior β during deformation; it also exerts effects on the morphology of the transformed α phase by variant selection.

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譚海兵,趙子博,楊久旭,劉遠(yuǎn)宏,王清江,劉建榮,朱紹祥.變形近 α 鈦合金局部組織不均勻性與局部織構(gòu)的關(guān)聯(lián)性[J].稀有金屬材料與工程,2022,51(12):4385~4388.[Tan Haibing, Zhao Zibo, Yang Jiuxu, Liu Yuanhong, Wang Qingjiang, Liu Jianrong, Zhu Shaoxiang. Connection Between Local Microstructure Heterogeneity and Local Texture in Deformed Near-α Titanium Alloy[J]. Rare Metal Materials and Engineering,2022,51(12):4385~4388.]
DOI：10.12442/j. issn.1002-185X.20220454

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  • 收稿日期:2022-05-24
  • 最后修改日期:2022-11-28
  • 錄用日期:2022-07-21
  • 在線發(fā)布日期: 2023-01-11
  • 出版日期: 2022-12-30