金属学报  1995, Vol. 31 Issue (4): 156-164

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溶解促进位错发射、运动导致黄铜薄膜应力腐蚀的TEM原位观察

谷飚;张静武;万发荣;褚武杨

北京科技大学;燕山大学材料系

IN SITU TEM OBSERVATION OF DISLOCATION EMISSION, MOTION INDUCED BY ANODIC DISSOLUTION AND THE INITIATION OF SCC IN BRASS THIN FOIL

GU Biao; ZHANG Jingwu; WAN Farong; CHU Wuyang(Deportment of Materials Physics; University of Sci ence and Tech nology; Beijing; Beijing 100083)

谷飚;张静武;万发荣;褚武杨. 溶解促进位错发射、运动导致黄铜薄膜应力腐蚀的TEM原位观察[J]. 金属学报, 1995, 31(4): 156-164.
, , , . IN SITU TEM OBSERVATION OF DISLOCATION EMISSION, MOTION INDUCED BY ANODIC DISSOLUTION AND THE INITIATION OF SCC IN BRASS THIN FOIL[J]. Acta Metall Sin, 1995, 31(4): 156-164.

摘要 参考文献 相关文章 Metrics 全文: PDF(750 KB)   摘要: 用特殊设计的恒位移加载台可以在ＴＥＭ中原位观察黄铜在纯水中局部溶解前后裂尖位错形核的变化，从而可以确定局部阳极溶解对位错发射、增殖和运动的影响；也可原位观察纳米级应力腐蚀（ＳＣＣ）裂纹的形核和扩展．结果表明，加用薄膜试样，黄铜在室温高纯水中能发生ＳＣＣ．在裂纹形核前，通过阳极溶解的促进作用，在低应力下就能导致位错的发射、增殖和运动．当溶解引起的位错发射、运动达到临界状态时，纳米级微裂纹就将在无位错区中不连续形核或从原裂纹顶端连续形核．和空气中原位拉伸不同，ＳＣＣ时由于介质的作用，己形核的微裂纹并不钝化成空洞或缺口，而是解理或沿晶扩展． 关键词 ： 黄铜,  溶解促进位错发射,  应力腐蚀,  ＴＥＭ原位观察     Abstract：篢he in situ TEM observations of dislocation emission, motion and the initiation of nanocrack in brass in corrosive solution were carried out. Using a special constant displacement device, the dislocation configuration change ahead of a loaded crack tip before and after anodic dissolution in the deionized water and the initiation, propagation of nanometre scale stress corrosion cracks has been observed. The results showed that SCC in brass thin foil specimen could occur in water. The localized anodic dissolution of brass in water at room temperature facilitated dislocation emission, multiplication and motion. A nanocrack initiated in the DFZ or at the blunted crack tip in corrosion solution after dislocations emission, multiplication and motion reached a critical condition. Because of the influence of the corrosion solution, the nanocrack will propagate and form a cleavage or intergranular microcrack during stress corrosion instead of blunting in to a void as it does during a tension test without solution. Key words： brass    dissolution facilitating dislocation emission    SCC    TEM in situ observation 收稿日期: 1995-04-18      基金资助:国家自然科学基金 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 谷飚 张静武 万发荣 褚武杨 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1995/V31/I4/156 1UhligHH．JElecSci,1976;l23:16692RevieRW,UhligHH．ActaMetall,1974;22:6193SmialowskiM,KostanskingJ．CorrosSci,1979;19:10194谷 飚,褚武扬,乔利杰,肖纪美．金属学报,1994;30:A2325黄彦良,曹楚南,林海潮．金属学报,1993;29:B2126魏学军,周向阳,柯伟．金属学报,1993,29:B2697黄一中,陈奇志,褚武扬．金属学报,1994,30:4528褚武扬,氢损伤与滞后断裂．北京:冶金工业出版社,1988:3619 SieradzkiK,NewmanRC．PhilMagA．1985;51:9510 GalveleJ R．CorrosSci,1987:27:111JonesDA．MetallTrans,1985:16A:113312MagninT,ChieragattiR,OltraR．ActaMetallMater,1990;38:131313KanfmanMJ,FinkJI．Actametall,1985;36:221314 陈奇志,褚武扬,肖纪美．中国科学,1994;24A:29115谷飚,褚武扬,肖纪美．金属学报,1994;30:36216张跃,褚武场,肖纪美．中国科学,1994;24A:55117高克玮,褚武扬,肖纪美．中国科学,1994;24A:99318HirthJP．TheoryofDislocation,2ndeds．JohnWileyandSonsInc,1982:61919ParkinsRN,RangelCM,YuJ．MetallTrans,1985;16A:1671 20BertocciU．EmbrittlementbytheLocalizedCrackEnvironment,AIME,Warrendle,1984:49T [1] 韩恩厚, 王俭秋. 表面状态对核电关键材料腐蚀和应力腐蚀的影响[J]. 金属学报, 2023, 59(4): 513-522. [2] 常立涛. 压水堆主回路高温水中奥氏体不锈钢加工表面的腐蚀与应力腐蚀裂纹萌生：研究进展及展望[J]. 金属学报, 2023, 59(2): 191-204. [3] 马志民, 邓运来, 刘佳, 刘胜胆, 刘洪雷. 淬火速率对7136铝合金应力腐蚀开裂敏感性的影响[J]. 金属学报, 2022, 58(9): 1118-1128. [4] 刘振宝,梁剑雄,苏杰,王晓辉,孙永庆,王长军,杨志勇. 高强度不锈钢的研究及发展现状[J]. 金属学报, 2020, 56(4): 549-557. [5] 马宏驰, 杜翠薇, 刘智勇, 李永, 李晓刚. E690高强低合金钢焊接热影响区典型组织在含SO2海洋环境中的应力腐蚀行为对比研究[J]. 金属学报, 2019, 55(4): 469-479. [6] 邓平,孙晨,彭群家,韩恩厚,柯伟,焦治杰. 核用304不锈钢辐照促进应力腐蚀开裂研究[J]. 金属学报, 2019, 55(3): 349-361. [7] 张聪惠, 荣花, 宋国栋, 胡坤. 喷丸表面粗糙度对纯Ti焊接接头在HCl溶液中应力腐蚀开裂行为的影响[J]. 金属学报, 2019, 55(10): 1282-1290. [8] 余军, 张德平, 潘若生, 董泽华. 井下含硫环空液中P110油管钢应力腐蚀开裂的电化学噪声特征[J]. 金属学报, 2018, 54(10): 1399-1407. [9] 赵婷婷, 康志新, 马夏雨. 一步电沉积法制备超疏水Cu网及其耐腐蚀和油水分离性能[J]. 金属学报, 2018, 54(1): 109-117. [10] 苑洪钟,刘智勇,李晓刚,杜翠薇. 外加电位对X90钢及其焊缝在近中性土壤模拟溶液中应力腐蚀行为的影响[J]. 金属学报, 2017, 53(7): 797-807. [11] 郭舒,韩恩厚,王海涛,张志明,王俭秋. 核电站316L不锈钢弯头应力腐蚀行为的寿命预测[J]. 金属学报, 2017, 53(4): 455-464. [12] 明洪亮,张志明,王俭秋,韩恩厚,苏明星. 国产核电安全端异种金属焊接件的微观结构及局部性能研究[J]. 金属学报, 2017, 53(1): 57-69. [13] 闫茂成,杨霜,许进,孙成,吴堂清,于长坤,柯伟. 酸性土壤中破损防腐层下X80管线钢的应力腐蚀行为*[J]. 金属学报, 2016, 52(9): 1133-1141. [14] 刘智勇,李宗书,湛小琳,皇甫文珠,杜翠薇,李晓刚. X80钢在鹰潭土壤模拟溶液中应力腐蚀裂纹扩展行为机理*[J]. 金属学报, 2016, 52(8): 965-972. [15] 张子龙, 夏爽, 曹伟, 李慧, 周邦新, 白琴. 晶界特征对316不锈钢沿晶应力腐蚀开裂裂纹萌生的影响*[J]. 金属学报, 2016, 52(3): 313-319. Viewed Full text Abstract Cited   Shared      Discussed