【作者】 史文； 李麟； 李康； 罗娟娟； 张聪； 张梅； 符仁钰； DE Cooman B.C.；

【Author】 Shi Wen~1 Li Lin~1 Li Kang~1 Luo Juanjuan~1 Zhang Cong~1 Zhang Mei~1 Fu Renyu~1 DE Cooman B.C.~2 (1.School of Materials,Shanghai University,200072;2.Postech Graduate School of Ferrous Technology,Pohang University of Sci.& Tec.,San31,Hyoya-dong,Nam-gu,Pohang,Kyungbuk,790-784,South Korea)

【机构】 上海大学材料学院； Postech Graduate School of Ferrous Technology,Pohang University of Sci.& Tec.,San31,Hyoya-dong,Nam-gu,Pohang,Kyungbuk,790-784,South Korea；

【摘要】 在实验室的热镀锌试验机上进行了相变诱发塑性(TRIP)钢的热镀锌试验研究,通过选定合适的气氛露点控制等工艺条件,对含硅量达0．55wt％的新 TRIP 钢,成功的实现了热镀锌,并研究了不同的锌液成分对新 TRIP 钢镀锌层的表面形貌和构成组织的影响。发现,镀锌液的成分对 TRIP 钢锌层的表面形貌和构成有重要的影响,经 0．5％Al+Zn 热镀锌后,锌层的表面为50μm 左右的等轴晶粒,锌层中组织主要由纯锌、Zn+Al+Fe 和 Zn+Fe 组织构成；经5％Al+Zn 热镀锌后,锌层的表面为1～3mm 的树枝晶,锌层中组织主要由 Zn+Al、Zn+Al+Fe 组织构成, 没有 Zn+Fe 组织,说明锌液中的铝抑制了 Zn+Fe 组织的形成。更多还原

【Abstract】 Different TRIP steels were hot-dip galvanized by means of a laboratory hot-dip simulator and the test TRIP steel with silicon of 0.55wt% was hot-dip galvanized successfully under appropriate dew point of the annealing atmosphere. Effect of different compositions of galvanization liquid on the visual appearance and structure of the galvanized panels were investigated,which showed that the composition of galvanization liquid had much effect on the visual appearance and structure of the galvanized panels.During immersion in the 0.5%Al-containing Zn bath,the appearance of the galvanized panels was 50μm equiaxed grain and the structure contains pure Zn,Zn+Al+Fe and Zn+Fe.During immersion in the 5% Al-containing Zn bath,the appearance of the galvanized panels was 1～3mm fir-tree crystal and the structure contained Zn+Al and Zn+Al+Fe,without Zn+Fe,which showed that Al of galvanization liquid inhibit the formation of Zn+Fe.更多还原