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| 1 | DP980冷轧高强钢连续退火工艺及强韧性行为研究显示文摘采用连续退火模拟试验机研究了连续退火工艺中缓冷及过时效温度对DP980冷轧高强钢组织性能的影响规律,并利用扫描电镜、透射电镜及拉伸试验机进行了显微组织及力学性能检测。研究结果表明:缓冷温度降低有利于新生铁素体及富碳岛状马氏体的生成,且实验钢屈服强度基本不变,抗拉强度先下降后升高,伸长率逐渐上升。缓冷温度为650℃时,强塑积(PSE)达到最大值15.55GPa·%。随着过时效温度的升高,实验钢抗拉强度及屈服强度略有下降,断后伸长率显著升高。工业试制HC550/980DP成品的屈服强度不小于570 MPa,抗拉强度不小于1 080 MPa,伸长率不小于7%,达到应用标准。 | 詹华 邹英 周凯 胡智评 许云波 肖洋洋 | 2017 | 轧钢2017，34，3： | 18 |
| 2 | 连续退火工艺对超高强双相钢力学性能的影响显示文摘为研究连续退火工艺参数对超高强冷轧双相钢组织及力学性能的影响,在Gleeble-3500热力模拟实验机上,使用正交实验法设计连续退火工艺获得超高强冷轧双相钢.研究发现:连续退火工艺参数对抗拉强度和总延伸率的影响程度依次是:临界区退火温度>保温时间>过时效温度;两阶段应变硬化特性随马氏体体积分数的增加而更加明显:当马氏体体积分数在35%左右时,冷轧双相钢的应变硬化关系明显呈线性;当马氏体体积分数接近50%时,冷轧双相钢的应变硬化关系呈非线性,但两阶段的应变硬化指数n值变化不大,两阶段并由曲线过渡;当马氏体体积分数在65%左右时,冷轧双相钢的应变硬化关系呈非线性,两阶段的应变硬化指数n值变化较大,并出现明显拐点. | 代启锋 宋仁伯 郭志飞 贺子龙 杨富强 | 2013 | 材料科学与工艺2013，21，3： | 7 |
| 3 | 两相区退火温度对高强冷轧DP980显微组织力学性能和断裂行为的影响显示文摘研究了两相区退火温度对高强冷轧DP 980显微组织和力学性能的影响,并通过断口形貌分析以及拉伸前后的照片对比,分析了高强冷轧DP 980变形和断裂特性。结果表明,两相区退火温度通过影响双相钢中马氏体的碳含量、马氏体和铁素体的晶粒尺寸来影响其力学性能。实验所获得双相钢均为微孔聚集型的韧性断裂。 | 毛博 储双杰 张理扬 孙宝德 | 2014 | 热加工工艺2014，43，20： | 6 |
| 4 | 部分奥氏体化和完全奥氏体化铁素体/马氏体双相钢的CCT曲线显示文摘采用Formaster热膨胀仪分别测定了部分奥氏体化与完全奥氏体化冷轧热镀锌Fe-CMn-Cr-Nb-Ti系双相钢的CCT曲线,分析了连续冷却过程中的相变规律,从动力学角度分析了部分奥氏体化与完全奥氏体化试验钢CCT曲线的区别。结果表明:在冷速分别为1,3,5℃·s^-1时,部分奥氏体化试验钢的铁素体开始转变温度比完全奥氏体化试验钢的分别高36,25,44℃;与完全奥氏体化试验钢相比,部分奥氏体化试验钢的贝氏体转变在向低冷速区推移的同时,也向高冷速区推移,贝氏体转变冷速范围变宽,为1~40℃·s^-1;当冷速为1~10℃·s^-1时,部分奥氏体化试验钢的贝氏体开始转变温度要低于完全奥氏体化试验钢的,而当冷速为15~20℃·s^-1时,情况则相反;为了保证冷轧热镀锌钢的最终淬火组织为铁素体/马氏体双相组织,冷速需大于40℃·s^-1。 | 金光灿 李锦 罗一平 | 2015 | 机械工程材料2015，39，5： | 5 |
| 5 | Dynamic Deformation Behavior of Dual Phase Ferritic-Martensitic Steel at Strain Rates From 10^(-4)to 2000 s^(-1)显示文摘The deformation behavior of the dual phase steel (DP1000 steel) was studied by the quasi-static tensile experiment and the dynamic tensile experiment.The experiments were carried out at strain rates ranging from 10-4 to 2 000 s-1 at room temperature.Then the stress-strain curves of DP1000 steel in the strain rate range of 10-4-2 000 s-1 were measured.By introducing the strain rate sensitivity factor m,Zerilli-Armstrong model was optimized.The constitutive equation parameters which formulate the mechanical behavior of DP1000 steel were fitted based on the Johnson-Cook (JC) constitutive model and the optimized Zerilli-Armstrong (ZA) constitutive model,respectively.By comparing indicators of 'accuracy-of-fit',R2 terms,for the two models,the optimized Zerilli-Armstrong constitutive model can reflect plastic deformation behavior both at the low and high strain rates more accurately.The reasons why the optimized Zerilli-Armstrong constitutive model is more advantageous than the Johnson-Cook model were discussed by using the yield strength and ultimate tensile strength (UTS) versus strain rates,and strain hardening rate versus effective plastic strain analytical methods. | SONG Ren-bo DAI Qi-feng | 2013 | Journal of Iron and Steel Research(International)2013，20，8： | 2 |
| 6 | Shear Fracture of Advanced High Strength Steels显示文摘Failure experiments were carried out through a stretch-bending test system for advanced high strength steels,i.e.dual-phase(DP)steels and martensitic steels(MS).The die radius in this system was designed from 1 to 15 mm to investigate the failure mode under different geometries.Two failure modes were observed during the experiments.As a result,critical relative radii(the ratio of inner bending radius Rto sheet thickness t)for DP590 and DP780 steels were obtained.The stretch-bending tests of DP980 display some trends unlike DP590 and DP780 steels,and curve of DP980 in different thicknesses does not coincide well.High blank holder force exhibits more possibility of shear fracture tendency than low blank holder force.The unique character of high strength martensitic steel(1 500MS)is that no shear fracture is found especially over small bending radius(R=2mm)under the same experimental conditions.Microstructure analysis indicates that there are obviously elongated grains on shear fracture surface.It shows smaller diameter and shallower depth of the dimples than the necking failure. | Sheng HUANG Yi-xi ZHAO Chun-feng HE | 2014 | Journal of Iron and Steel Research(International)2014，21，10： | 2 |
| 7 | Effect of Rolling Process on Comprehensive Properties of Corrosion Resistant Steel for Bottom Plate of Cargo Oil Tanks显示文摘A new kind of corrosion resistant steelfor cargo oiltanks(COT)was developed.The influences of finalrolling temperature,cooling rate,and finalcooling temperature on microstructure were investigated.The proper rolling process parameters were obtained through multi-pass thermalsimulation test.The finalrolling temperature is about 820 ℃,the finalcooling temperature is about 600 ℃,and the cooling rate should be controlled between 10 ℃/s and 20 ℃/s.Based on the above analysis of the results,three groups of rolling samples by thermo mechanicalcontrolprocess are prepared.The tensile strength,yield strength,and toughness of the corrosion resistant steelare measured,which meet the requirements of DH36 steel,it can instruct the actualrolling production.The corrosion behaviour is also researched by weight loss and electrochemicalimpedance spectroscopic method,and it is found that the steelhas good corrosion resistance performance,the best one is No.3 steel,the corrosion rate of which is about 1/4 of the accepted criterion. | 于驰 王平 GAO Xiuhua DU Linxiu | 2016 | Journal of Wuhan University of Technology(Materials Science)2016，31，2： | 1 |
| 8 | 热处理对DH36钢的微观组织演化与性能的影响显示文摘为了揭示热处理工艺对冷轧合金钢DH36微观组织及其塑性流动特性的影响,在实验室对DH36冷轧钢进行5种不同工艺过程的热处理,结合力学试验、扫描电镜和X射线能谱分析,对不同热处理工艺下的微观组织演化和塑性流动特性进行了深入分析。结果表明:DH36钢经α和γ两相区不同温度退火后,微观组织中的珠光体减少,铁素体增多,但流动应力变化的幅值相同;对比发现,经880℃淬火和700℃回火的DH36钢具有比冷轧态DH36钢更高的塑性流动应力,这主要归功于弥散分布的颗粒状碳化物的沉淀强化作用,以及晶粒中存在大量的亚晶界;DH36钢中的DSA现象出现在一个较宽的温度范围内,DSA应力峰值处的激活能为234kJ/mol,这可归于置换溶质原子与运动位错的相互作用。 | 孔德拴 郭伟国 孟卫华 王亚妮 | 2013 | 热加工工艺2013，42，6： | 0 |
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