为探究一种新型铁素体不锈钢的深冲性能，在840～920℃不同温度下对新型铁素体不锈钢的冷轧板做再结晶退火处理，通过XRD、SEM和EBSD等分析方法研究了退火2 min或4 min后，材料微观组织、宏观织构的变化规律对深冲性能的影响及其内在机理．研究表明：保持退火时间2 min，退火温度900℃时，试验钢拥有较多的有利γ纤维织构，主要为｛111｝＜112＞取向，并有少量α纤维织构，此时平均塑性应变比r－＝1．77，高于其他退火温度下的值；延长退火时间，在900℃下保温4 min，不同取向晶粒获得了长大机会，晶粒尺寸均匀性显著改善，r－值提高至1．82，试验钢有望取得理想深冲性能．
To explore the deep drawing property of a new?type ferritic stainless steel, cold?rolled sheets of the steel were treated between 840~920 ℃ by recrystallization annealing, and the evolution of microstructure, macro?texture and their effects on deep drawability when annealing for 2 and 4 min were studied by XRD, SEM, EBSD. Results show that when annealed at 900 ℃ for 2 min, much favorable γ fiber texture with{111}<112> orientation and a small amount ofαfiber texture appeared. The average plastic strain ratio r-was 1.77, which was higher than that of other temperatures, this was because grains with {111} orientation contained much low coincidence site lattice grain boundary, which had a priority to grow up and high movement speed. Annealing at 900 ℃ for 4 min, grains that had different orientations all got chance to grow up, the uniformity of the grain size had also been improved significantly, the r-was raised to 1.82, and ideal deep drawability might be expected.
参考文献
| [1] | 杜伟,江来珠,余海峰,孙全社.铁素体不锈钢的冲压性[J].宝钢技术,2012(06):66-76. |
| [2] | 于德健 .超纯Cr12铁素体不锈钢的组织、织构及成形性能研究[D].东北大学,2009. |
| [3] | 崔忠圻,覃耀春.金属学与热处理[M].北京:机械工业出版社,2007:216-217.,2007. |
| [4] | MIYAMOTO Hrioyuki, XIAO Tong, UENOYA Toshiyuki, et al. Effect of simple shear deformation prior to cold roll-ing on texture and ridging of 16% Cr ferritic stainless steel sheets [J]. ISIJ International, 2010, 50 (11):1653-1659.,2010. |
| [5] | VAN Der Eijk C,GRONG O,HAAKONSEN F,et al. Progress in the development and use of grain refiner based on cerium sulfide or titanium compound for carbon steel [J]. ISIJ International, 2009, 49 (7):1046-1050.,2009. |
| [6] | Ming-lin Wang,Guo-guang Cheng,Sheng-tao Qiu,Pei Zhao,Yong Gan.Roles of titanium-rich precipitates as inoculants during solidification in low carbon steel[J].矿物冶金与材料学报,2010(03):276-281. |
| [7] | 刘海涛. Cr17铁素体不锈钢的组织、织构及成型性能研究[D].沈阳:东北大学,2009.,2009. |
| [8] | 张鑫,孙全社,杜伟.超纯430铁素体不锈钢组织和性能的研究[C].第七届中国钢铁年会论文集,2009:2863-2869. |
| [9] | 刘海涛,刘振宇,王国栋,江来珠.超纯铁素体不锈钢的组织、织构及深拉伸性能[J].东北大学学报（自然科学版）,2009(05):661-664. |
| [10] | KANG H G,HUN M Y, PARK S H, et al . Effect of lubrication during hot rolling on the evolution of through-thickness textures in 18% Cr Ferritic stainless steel[J].Steel Research International,2008,79(6):489-496.,2008. |
| [11] | 王绪,杨弟,毛为民,等 .超深冲IF钢退火过程中织构变化的ODF分析[J].钢铁研究学报,1995,7(1):60-65. WANG Xu, YANG Di, MAO Weimin, et, al. ODF analysis of textural variation on extra-deep drawing if steel sheet during annealing [J]. Journal of Iron and Steel Research,1995,7(1):60-65.,1995. |
| [12] | 张驰,刘振宇,郑淮北,马力,王国栋.Nb和Ti对超纯铁素体不锈钢凝固组织及表面起皱的影响[J].材料热处理学报,2011(09):23-28. |
| [13] | SHIN Hyung Joon, AN Joong Kyu, PARK Soo Ho,et al. The effect of texture on ridging of ferritic stainless steel[J].Acta Materialia,2003(51):4693-4706.,2003. |
| [14] | 杜伟,江来珠,孙全社,余海峰,刘振宇.凝固组织对超低碳铁素体不锈钢皱褶和深冲性的影响[J].宝钢技术,2010(02):25-29. |
| [15] | 顾金磊,余海峰,顾佳卿,江来珠,金学军.冷轧工艺对00Cr21MoNbTi铁素体不锈钢组织、织构与成形性能的影响[J].钢铁,2011(04):82-87. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%