Al含量对δ-TRIP钢热轧态组织性能的影响
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摘要
通过OM技术、XRD技术分析了两种不同Al含量的δ-TRIP钢的组织成分、形貌、含量;同时进行了拉伸试验,得出了各项力学性能指标。分析结果表明,两种不同Al含量的δ-TRIP钢热轧后其相组成均为铁素体+奥氏体双相组织,但含量和形貌发生了改变,且强度和延伸率随Al含量的增加而升高。
The microstructure,morphology and content of two kind of δ-TRIP steel with different Al content were analyzed by OM and XRD. The tensile test was carried out and the mechanical properties were obtained. The results show that the phase composition of test steel with different Al content is ferrite + austenite dual phase structure after hot rolling,but the content and morphology have changed,and the strength and elongation increase with the increase of Al content.
The microstructure,morphology and content of two kind of δ-TRIP steel with different Al content were analyzed by OM and XRD. The tensile test was carried out and the mechanical properties were obtained. The results show that the phase composition of test steel with different Al content is ferrite + austenite dual phase structure after hot rolling,but the content and morphology have changed,and the strength and elongation increase with the increase of Al content.
引文
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[3]陈鹰.基于轻量化评估的高性能汽车钢冲压件技术研究[D].北京:钢铁研究总院,2017.
[4]姜沪,李麟,何燕霖,等.汽车钢近年来的发展、问题、处理和展望[J].上海金属,2017,(6):76~80.
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[6]康永林,朱国明.中国汽车发展趋势及汽车用钢面临的机遇与挑战[J].钢铁,2014,49(12):1~7.
[7]罗晔.韩国浦项钢铁公司汽车用钢技术的研发进展[J].汽车工艺与材料,2015,(4):57~63.
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[11]Lee K,Park S J,Yong S C,et al.Dual-scale correlation of mechanical behavior in duplex low-density steel[J].ScriptaMaterialia,2013,69(8):618~621.
[12]张维娜,刘振宇,王国栋.高锰TWIP/TRIP钢研究进展与应用[J].中国工程科学,2014,16(1):40~47.
[13]王存宇,曹文全,董瀚.中锰第三代汽车钢及其先进性[C]//中国钢铁年会.2017.
[14]吝章国.超高强中锰钢的Q&P热处理工艺及变形机制研究[D].北京:北京科技大学,2017:45.
[15]陈思悦,徐京,张鑫,杨弋涛.退火温度对铁素体不锈钢热轧板组织与性能的影响[J].金属热处理,2013,38(2):102~105.
[16]李阳,张燕平.高强钢连铸坯开浇纵裂原因及控制[J].河北冶金,2018,(7):22~24.
[17]刘仁东,郭金宇,王福.鞍钢高强汽车用钢研发进展[J].上海金属,2013,35(4):47~52.
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[19]赵堃.汽车用低碳δ铁素体钢组织性能研究[D].鞍山:辽宁科技大学,2015.
[20]张磊峰,宋仁伯,赵超,等.新型汽车用钢---低密度高强韧钢的研究进展[J].材料导报,2014,28(19):111~118+129.