金属学报  2011, Vol. 47 Issue (4): 435-441    DOI: 10.3724/SP.J.1037.2010.00578

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焊接热影响区针状铁素体的形核长大及其对组织的细化作用

舒玮1), 王学敏1), 李书瑞2), 贺信莱1)

1) 北京科技大学材料科学与工程学院, 北京 100083 2) 武汉钢铁(集团)公司, 武汉 430080

NUCLEATION AND GROWTH OF INTRAGRANULAR ACICULAR FERRITE AND ITS EFFECT ON GRAIN REFINEMENT OF THE HEAT-AFFECTED-ZONE

SHU Wei1), WANG Xuemin1), LI Shurui2), HE Xinlai1)

1) School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 2) Wuhan Iron and Steel (Group) Corp, Wuhan 430080

舒玮 王学敏 李书瑞 贺信莱. 焊接热影响区针状铁素体的形核长大及其对组织的细化作用[J]. 金属学报, 2011, 47(4): 435-441.
, , , . NUCLEATION AND GROWTH OF INTRAGRANULAR ACICULAR FERRITE AND ITS EFFECT ON GRAIN REFINEMENT OF THE HEAT-AFFECTED-ZONE[J]. Acta Metall Sin, 2011, 47(4): 435-441.

摘要 参考文献 相关文章 Metrics 全文: PDF(1406 KB)   摘要: 通过观察焊接热循环冷却过程中不同温度取样直接淬火后的微观组织, 研究了焊接热影响区(HAZ)晶内针状铁素体(IAF)的形核长大过程, 论证了针状铁素体分割原奥氏体晶粒及细化晶内组织的机理. Auger电子能谱(AES)证实, 在TiOx-MnS型复合夹杂物边界附近存在贫Mn区, IAF易于在这类复合夹杂物上形核, 单个复合夹杂物能够诱导多个IAF形核, 随着冷却过程中温度的降低, 形核后的IAF逐渐长大. 淬火马氏体和贝氏体在生长过程中会与IAF发生碰撞, 使其发生变形, 但不能穿过IAF. 正是由于IAF分割了原奥氏体晶粒, 阻碍了晶内其它微观组织的生长, 焊接热影响区的微观组织得到细化. 关键词 ： 焊接热影响区(HAZ),  晶内针状铁素体(IAF),  TiOx-MnS型复合夹杂,  贫Mn区,  细化晶粒     Abstract：Nucleation and growth of intragranular acicular ferrites (IAFs) in heat-affected-zone (HAZ) have been investigated by the observation of microstructures quenched at different temperatures during the cooling process of welding thermal cycle. It is proved that IAFs can divide the prior austenite grains and refine the intragranular microstructures. AES show that there is a Mn-depleted-zone near the interface of TiOx-MnS complex inclusion. IAFs prefer to nucleate on the complex inclusion, and a single inclusion can usually induce several IAFs to nucleate. IAFs grow up with lowering of the temperature during the cooling process. Quenched martensite and bainite could collide with the IAFs and make them deform, but the< quenched martensite and bainite can not penetrate through the IAFs. IAFs divide the prior austenite grain and restrain the growth of other intragranular microstructures, and therefore HAZ's microstructure is finally refined effectively. Key words： heat--affected--zone (HAZ), intragranular acicular ferrite (IAF)    TiOx-MnS complex inclusion    Mn-depleted zone    grain refinement 收稿日期: 2010-10-28      ZTFLH:  TG142.1   基金资助: 国家高技术研究发展计划资助项目2008AA03Z501 作者简介: 舒玮, 男, 1982年生, 博士生 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 舒玮 王学敏 李书瑞 贺信莱 44.8K 链接本文: https://www.ams.org.cn/CN/10.3724/SP.J.1037.2010.00578      或      https://www.ams.org.cn/CN/Y2011/V47/I4/435 [1] Ricks R A, Howell P R, Barritte G S. J Mater Sci, 1982; 17: 732 [2] Barbaro F J, Krauklis P, Easterling K E. Mater Sci Technol, 1989; 5: 1057 [3] Farrar R A, Harrison P L. J Mater Sci, 1987; 22: 3812 [4] Pan Y T, Lee J L. Mater Des, 1994; 15: 331 [5] Hajeri Al K F, Garcia C I, Hua M Q, Deardo A J. ISIJ Int, 2006; 46: 1233 [6] Shim J H, Byun J S, Cho Y W, Oh Y J, Shim J D, Lee D N. ISIJ Int, 2000; 40: 819 [7] ShuW,WangXM, Li S R, He X L. Acta Metall Sin, 2010; 46: 997 (舒 玮, 王学敏, 李书瑞, 贺信莱. 金属学报, 2010; 46: 997) [8] Yang J R, Bhadeshia H K D H. Mater Sci Technol, 1989; 5: 93 [9] Liu Z, Kobayashi Y, Yin F, Kuwabara M, Nagai K. ISIJ Int, 2007; 47: 1781 [10] Zhuo X J, Wang Y Q, Wang X H, Lee H G. J Iron Steel Res Int, 2010; 17: 10 [11] Mabuchi H, Uemori R, Fujioka M. ISIJ Int, 1996; 36: 1406 [12] Shim J H, Cho Y W, Chung S H, Shim J D, Lee D N. Acta Mater, 1999; 47: 2751 [13] Gregg J M, Bhadeshia H K D H. Metall Mater Trans, 1994; 25A: 1603 [14] Yamamoto K, Hasegawa T, Takamura J. ISIJ Int, 1996; 36: 80 [15] Enomoto M, Wu K M, Inagawa Y, Murakami T, Nanba S. ISIJ Int, 2005; 45: 756 [16] Wu K M. Scr Mater, 2006; 54: 569 [1] 胡志勇 杨成威 姜敏 杨光维 王万军 王新华. Ti脱氧钢含Ti复合夹杂物诱导晶内针状铁素体的原位观察[J]. 金属学报, 2011, 47(8): 971-977. [2] 舒玮 王学敏 李书瑞 贺信莱. 含Ti复合第二相粒子对微合金钢焊接热影响区组织和性能的影响[J]. 金属学报, 2010, 46(8): 997-1003. [3] 康志新 彭勇辉 桑静 简炜炜 赵海东 李元元. T型通道挤压变形Mg-1.5Mn-0.3Ce合金的超塑性和组织演变[J]. 金属学报, 2009, 45(9): 1117-1124. Viewed Full text Abstract Cited   Shared      Discussed