Please wait a minute...
金属学报  2016, Vol. 52 Issue (10): 1345-1352    DOI: 10.11900/0412.1961.2016.00333
  本期目录 | 过刊浏览 |
晶粒及晶界特征对高锰奥氏体TWIP钢抗腐蚀能力的影响*
袁晓云,陈礼清()
东北大学轧制技术及连轧自动化国家重点实验室, 沈阳 110819
EFFECT OF GRAIN AND GRAIN BOUNDARY FEATURESON ANTI-CORROSION ABILITY OF A HIGH MANGANESE AUSTENITIC TWIP STEEL
Xiaoyun YUAN,Liqing CHEN()
State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
全文: PDF(7145 KB)   HTML
  
摘要: 

以一种高锰奥氏体孪晶诱发塑性(TWIP)钢为实验材料, 采用700~1000 ℃保温20 min及800 ℃保温10~30 min的退火工艺获得了不同晶粒尺寸分布及晶界特征分布的再结晶组织, 结合EBSD技术及动电位极化曲线测试, 研究了晶粒度、晶粒均匀性及晶界特征分布对该钢抗腐蚀能力的影响. 结果表明, 该高锰奥氏体TWIP钢的抗腐蚀能力受组织中的晶粒度及重位点阵(CSL)晶界分布比例的影响, 二者的作用在再结晶的组织中因组织的均匀性不同而表现出明显差异. 当再结晶过程刚刚结束, 晶粒组织尚不均匀且未进入晶粒长大阶段时, 平均晶粒尺寸对抗腐蚀能力的影响占主导地位. 随着平均晶粒尺寸的增大, 该TWIP钢的抗腐蚀能力下降. 而当再结晶晶粒充分长大且晶粒尺寸分布均匀, CSL晶界所占的比例对其抗腐蚀能力的影响尤为显著. 随着CSL晶界所占晶界比例的提高, 该TWIP钢的抗腐蚀能力增加.

关键词 孪晶诱发塑性钢晶粒均匀性重位点阵晶界抗蚀性    
Abstract

A considerable researches have been conducted to provide rather compelling evidence that the grain size and grain boundary distribution possess much influential effect on mechanical properties and corrosion behaviors in most metals and alloys. However, the effects of grain size and grain boundary distribution on anti-corrosion ability of materials have been independently studied. Some investigations indicate that the occurrence frequency and distribution characteristic of twin-related (especially Σ3n coincidence site lattice (CSL)) grain boundaries play a particularly important role in optimization of grain boundary character distribution. Unfortunately, both of these factors are interactive in annealing processes and there is a need to identify the independent role of the factors in anti-corrosion ability. In this work, a high manganese austenitic twinning-induced plasticity (TWIP) steel was used as experimental material and the anti-corrosion behavior of this steel resulted from both the grain size and grain boundary distribution was studied. The cold-rolled high manganese austenitic TWIP steel sheet was annealed at 700~1000 ℃ for 10~30 min to obtain microstructure with various grain sizes and CSL grain boundaries. The average grain size and grain boundary distribution characteristics for all the annealed steel sheets were obtained by the online analysis of EBSD data with HKL-Channel software. The anodic polarization curves were measured using CorrTest4 electrochemical workstation in 3.5%NaCl solution at 25 ℃ with a scan rate of 0.5 mV/s. The results show that both of the grain size and the occurrence frequency of CSL grain boundary caused by the uniformity of recrystallized microstructure have much effect on the anti-corrosion ability of this high manganese TWIP steel. When the recrystallization process just finished, and grains were inhomogeneous and not start to grow, the average grain size has a great influence on anti-corrosion ability. With increasing the grain size, the anti-corrosion ability of this high manganese TWIP steel was weakened. When the recrystallized grain growth fully takes place, the occurrence frequency of CSL grain boundary has the dominant effect on the anti-corrosion ability. The anti-corrosion ability was optimized with increasing the frequency of CSL grain boundary.

Key wordsTWIP steel    grain homogeneity    CSL grain boundary    anti-corrosion ability
收稿日期: 2016-07-25      出版日期: 2016-08-30
:     
基金资助:* 国家自然科学基金项目51271051和51304045资助

引用本文:

袁晓云, 陈礼清. 晶粒及晶界特征对高锰奥氏体TWIP钢抗腐蚀能力的影响*[J]. 金属学报, 2016, 52(10): 1345-1352.
Xiaoyun YUAN, Liqing CHEN. EFFECT OF GRAIN AND GRAIN BOUNDARY FEATURESON ANTI-CORROSION ABILITY OF A HIGH MANGANESE AUSTENITIC TWIP STEEL. Acta Metall Sin, 2016, 52(10): 1345-1352.

链接本文:

http://www.ams.org.cn/CN/10.11900/0412.1961.2016.00333      或      http://www.ams.org.cn/CN/Y2016/V52/I10/1345

图1  高锰奥氏体孪晶诱发塑性(TWIP)钢在不同温度退火20 min后的微观组织EBSD像
图2  高锰奥氏体TWIP钢在不同退火温度保温20 min后的平均晶粒尺寸
图3  高锰奥氏体TWIP钢在不同温度退火20 min后的极化曲线
图4  高锰奥氏体TWIP钢在不同退火温度保温20 min后的重位点阵(CSL)晶界分布
图5  高锰奥氏体TWIP钢在不同退火温度下保温20 min后组织中CSL晶界所占比例
图6  高锰奥氏体TWIP钢在800 ℃退火不同时间后的微观组织EBSD像
图7  高锰奥氏体TWIP钢在800 ℃保温不同时间后得到的极化曲线
图8  高锰奥氏体TWIP钢在800 ℃不同保温时间退火后的CSL晶界分布
图9  高锰奥氏体TWIP钢经过不同时间退火后组织中CSL晶界所占比例
Grain size Ecorr icorr Frequency of Σ3n Annealing Annealin g
μm V Acm-2 grain boundary / % temperature / ℃ time / min
2.1 -0.65 4.6×10-6 36.98 700 20
3.3 -0.66 4.8×10-6 36.13 800 10
4.5 -0.70 1.0×10-5 36.38 800 20
4.8 -0.69 6.6×10-6 45.03 800 30
9.9 -0.71 1.2×10-5 31.55 900 20
25.9 -0.74 1.6×10-5 30.83 1000 20
表1  不同退火工艺下高锰奥氏体TWIP钢板的组织及腐蚀特征参数
[1] Shu X L, Yan N H, Shu R Y, Peng Y Z.Corros Sci, 2013; 66: 211
[2] Gollapudi S.Corros Sci, 2012; 62: 90
[3] Qian X R, Chou Y T.Phil Mag, 1982; 45A: 1075
[4] Erb U, Gleiter H, Schwitzgebel G.Acta Metall, 1982; 30: 1377
[5] Bennett B W, Pickering H W.Metall Trans, 1987; 18A: 1117
[6] Watanabe T.Res Mech, 1984; 11: 47
[7] Randle V.Acta Mater, 2004; 52: 4067
[8] Watanabe T.Mater Sci, 2011; 46: 4095
[9] Lin P, Palumbo G, Erb U.Scr Metall Mater, 1995; 33: 1387
[10] Lin P, Palumbo G, Aust K T.Scr Mater, 1997; 36: 1145
[11] Lehockey E M, Limoges D, Palumbo G, Sklarchuk J, Tomantschger K, Vincze A.J Power Sources, 1999; 78: 79
[12] Xia S, Zhou B X, Chen W J, Wang W G.Scr Mater, 2006; 54: 2019
[13] Palumbo G, Aust K T.Acta Metall Mater, 1990; 38: 2343
[14] Cheung C, Erb U, Palumbo G.Mater Sci Eng, 1994; A185: 39
[15] Alexandreanu B, Was G S.Scr Mater, 2006; 54: 1047
[16] Shimada M, Kokawa H, Wang Z J, Sato Y S.Acta Mater, 2002; 50: 2331
[17] West E A, Was G S.Nucl Mater, 2009; 392: 264
[18] Michiuchi M, Kokawa H, Wang Z J, Sato Y S, Sakai K.Acta Mater, 2006; 54: 5179
[19] Kobayashi S, Kobayashi R, Watanabe T.Acta Mater, 2016; 102: 397
[20] Emregul K, Atakol O.Mater Chem Phys, 2004; 83: 373
[21] Ju H, Kai Z P, Li Y.Corros Sci, 2008; 50: 865
[22] Luo J, Zhang Y, Zhong Q D, Zhang L, Zhu Z Y.Corros Prot, 2014; 33: 349
[22] (罗检, 张勇, 钟庆东, 张磊, 朱振宇, 腐蚀与防护, 2014; 33: 349)
[23] Wang F C, Dong Y, Han X, Sun Z X, Qi Y H.Light Alloy Fabr Technol, 2013; 41(6): 33
[23] (王凤春, 董影, 韩啸, 孙兆霞, 祁艳华. 轻合金加工技术, 2013; 41(6): 33)
[24] Randle V.Acta Mater, 1999; 47: 4186
[25] Schuh C A, Kumar M, KingW E.Acta Mater, 2003; 51: 68.
[26] Watanabe T.Res Mech, 1984; 11: 47.
[27] Watanabe T.Scr Metall Mater, 1992; 27: 1497
[28] Randle V.Acta Mater, 2004; 52: 4067
[1] 罗新民, 王翔, 陈康敏, 鲁金忠, 王兰, 张永康. 激光冲击诱导的航空铝合金表层高熵结构及其抗蚀性[J]. 金属学报, 2015, 51(1): 57-66.
[2] 雷明凯 王克胜 欧伊翔 张磊. 泵阀用2Cr13马氏体不锈钢等离子体基低能氮离子注入研究[J]. 金属学报, 2011, 47(12): 1490-1494.
[3] 粱勇;王俊;佟百运;斯重遥. Cr-Mo合金激光合金化的组织结构及耐蚀性[J]. 金属学报, 1992, 28(1): 39-44.