2｝孿生過(guò)程中所再次產(chǎn)生的基面滑移而形成。通過(guò)實(shí)驗(yàn)觀察到最有可能發(fā)生的錐面滑移系統(tǒng)為在｛101｝面上所產(chǎn)生的<113>錐面滑移，但總體上來(lái)說(shuō)，基面的滑移跡線(xiàn)比錐面的滑移跡線(xiàn)更密集，這說(shuō)明錐面滑移在整個(gè)疲勞變形過(guò)程中被抑制。"/>

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大晶粒純鎂疲勞變形過(guò)程中交叉滑移跡線(xiàn)的分析
作者:
作者單位:

1.重慶理工大學(xué) 材料科學(xué)與工程學(xué)院，重慶 400030;2.西南交通大學(xué) 材料科學(xué)與工程學(xué)院，四川 成都 610031;3.重慶渝江壓鑄有限公司，重慶 400000

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中圖分類(lèi)號(hào):

基金項(xiàng)目:

NSFC(No. 51901030 and No. 51801165), Natural Science Foundation of Chongqing (No. cstc2017jcyjAX0381, No. cstc2020jcyj-msxmX0877, cstc2019jcyj-msxmX0183), the Science and Technology Research Program of Chongqing Municipal Education Commission (No. KJQN201901118，No. KJQN201901117) and the Scientific Research Foundation of Chongqing University of Technology.


Criss-cross Slip Traces During the Cyclic Deformation of Pure Coarse-Grained Polycrystalline Magnesium
Author:
Affiliation:

1.College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400030, China;2.School of Material Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China;3.Chongqing YuJiang Die-Casting Co., Ltd, Chongqing 400000, China

Fund Project:

National Natural Science Foundation of China (51901030, 51801165); Natural Science Foundation of Chongqing (cstc2017jcyjAX0381, cstc2020jcyj-msxmX0877,cstc2019jcyj-msxmX0183);Science and Technology Research Program of Chongqing Municipal Education Commission (KJQN201901118); Scientific Research Foundation of Chongqing University of Technology

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    摘要:

    在室溫條件下研究了大晶粒純鎂疲勞變形過(guò)程中有可能激活的滑移系統(tǒng)及滑移跡線(xiàn)。結(jié)果表明，經(jīng)過(guò)疲勞變形后大量的縱橫交叉滑移跡線(xiàn)在樣品表面產(chǎn)生，基于晶粒取向與滑移跡線(xiàn)方向的綜合判定，這種縱橫交叉滑移跡線(xiàn)是由反復(fù)疲勞變形過(guò)程中基體的基面滑移與同一區(qū)域內(nèi)｛102｝孿生過(guò)程中所再次產(chǎn)生的基面滑移而形成。通過(guò)實(shí)驗(yàn)觀察到最有可能發(fā)生的錐面滑移系統(tǒng)為在｛101｝面上所產(chǎn)生的<113>錐面滑移，但總體上來(lái)說(shuō)，基面的滑移跡線(xiàn)比錐面的滑移跡線(xiàn)更密集，這說(shuō)明錐面滑移在整個(gè)疲勞變形過(guò)程中被抑制。

    Abstract:

    The possible activated slip systems and slip traces of pure coarse-grained magnesium were investigated during cyclic deformation at room temperature. Results show that numerous criss-cross slip traces are observed on the surface of the specimens after cyclic loading. Based on the results of a combinatory analysis for the unit cell orientation and direction of the slip traces, it is determined that the criss-cross slip traces are formed by the intersection of the basal slip traces in the former matrix and the subsequent {} twinning area during the reversed cyclic loading. Moreover, the most likely pyramidal slip mode is the sliding of <> pyramidal dislocations on {} pyramidal planes, while the basal slip traces are denser than the pyramidal slip traces, suggesting that there is limited pyramidal slip activity.

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譚力,黃星宇,孫奇,張琰斌,涂堅(jiān),周志明.大晶粒純鎂疲勞變形過(guò)程中交叉滑移跡線(xiàn)的分析[J].稀有金屬材料與工程,2022,51(6):2005~2010.[Tan Li, Huang Xingyu, Sun Qi, Zhang Yanbin, Tu Jian, Zhou Zhiming. Criss-cross Slip Traces During the Cyclic Deformation of Pure Coarse-Grained Polycrystalline Magnesium[J]. Rare Metal Materials and Engineering,2022,51(6):2005~2010.]
DOI：10.12442/j. issn.1002-185X.20210915

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  • 收稿日期:2021-10-20
  • 最后修改日期:2022-05-19
  • 錄用日期:2022-02-28
  • 在線(xiàn)發(fā)布日期: 2022-06-29
  • 出版日期: 2022-06-29