以细晶高强IF钢为研究对象,运用型号为AG-IS 100KN高温拉伸试验机测定温度为650-1 100℃区间内高温拉伸性能,型号为AG-IS 100KN低温拉伸试验机测定温度为-20--60℃的区间内低温拉伸性能。结果表明：在650-900℃区间内,材料的强度从121 MPa降到19 MPa;但在900-950℃因出现两相区,强度反而随温度的升高而升高,从19 MPa升到59 MPa;950-1 100℃区间内,强度又从59 MPa降到26 MPa,降低幅度较小;在低温区间内,材料的强度随温度的降低大约升高了30MPa,塑性伸长率降低了1.5%,硬化指数n略有增加,从0.232增加到0.242。
The fine-grain and high-strength IF steel is studied in this paper.Tensile properties were tested by tension testing machine AG-IS100KN at 650～1 100 ℃ and-20～-60 ℃,respectively.The results indicated that the increase of temperature leads to a marked decrease in strength in 650～900 ℃ and 950～1 100 ℃ zone,but the strength increases with the increase of temperature in the two phase zone of 900～950 ℃.In low temperature zone,with temperature decrease the strength increases by about 30 MPa,plastic elongation rate decreases by 1.5 %,hardening exponent n-value slightly increases from 0.232 to 0.242.
参考文献
| [1] | Jordan C E;Goggins K M;Marder A R .Interracial layer development in hot-dip galvanneal coatings on intersitial tree(IF)steel[J].Metallurgical and Materials Transactions,1994,A25(10):2101-2111. |
| [2] | 左军.Ti-IF钢冷轧板罩式退火工艺研究[J].钢铁钒钛,2007(01):68-72. |
| [3] | 陈银莉,周欢,陈曦,赵爱民.超低碳（Ti+Nb）-IF钢组织性能和织构的研究[J].中国体视学与图像分析,2007(04):289-293. |
| [4] | 张小强,乔立峰,张红梅,王国栋.变形温度对细晶高强IF钢应力-应变曲线及显微组织的影响[J].辽宁科技大学学报,2008(06):570-574. |
| [5] | 崔忠圻.金属学与热处理[M].北京:机械工业出版社,2000:202-204. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%