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| 微合金钢中碳氮化物再加热过程中的热稳定性分析 | |
| 引用本文： | 张晓娟,郝斌,苑少强,梁国俐.微合金钢中碳氮化物再加热过程中的热稳定性分析[J].唐山学院学报,2012,25(6):64-66. |
| 作者姓名： | 张晓娟 郝斌 苑少强 梁国俐 |
| 作者单位： | 1. 唐山学院机电工程系,河北唐山,063000 2. 新金属材料国家重点实验室,北京,100083 3. 唐山学院机电工程系,河北唐山063000 新金属材料国家重点实验室,北京100083 |
| 基金项目： | 河北省自然科学基金-钢铁联合研究基金，新金属材料国家重点实验室开放课题 |
| 摘 要： | 利用透射电子显微术、萃取复型及热力学分析方法,研究了多元微合金钢中碳氮化物在再加热过程中成分变化规律。结果表明:实验钢轧态中含有两类不同类型的析出相,尺寸较大的是合金凝固过程中形成的富Ti的碳氮化物;而非常细小的析出相是应变诱导过程中形成的富Nb相。在加热过程中应变诱导析出相在1 000℃后迅速消失,而第一类富Ti的颗粒在1 300℃保温2h仍然检测到存在,并且发现碳氮化物中有部分Nb存在,热力学分析亦证明了实验结果。 |
| 关 键 词： | 多元微合金钢 碳氮化物 热稳定性 |
Investigation on Thermal Stability of Carbonitrides in Microalloyed Steel during Reheating Process |
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| ZHANG Xiao-juan,HAO Bin,YUAN Shao-qiang,LIANG Guo-li.Investigation on Thermal Stability of Carbonitrides in Microalloyed Steel during Reheating Process[J].Journal of Tangshan College,2012,25(6):64-66. | |
| Authors: | ZHANG Xiao-juan HAO Bin YUAN Shao-qiang LIANG Guo-li |
| Institution: | 1(1.Department of Electromechanical Engineering,Tangshan College,Tangshan 063000,China;2.State Key Lab of Advanced Metals Materials,Beijing 100083,China) |
| Abstract: | The extraction replica method,transmission electron microscope（TEM） technique and thermodynamics analysis were adopted to investigate the composition variation with the carbionitrides during the reheating process.The results show that there are two kinds of precipitates in the as rolled tested steel.The larger one is Ti-rich carbonitrides which is formed during the solidification;the families of finer particles are Nb-rich ones from the strain induced precipitation.The Nb-rich precipitates disappear rapidly when held at 1 000 ℃.However,the former larger precipitates can still be observed under the TEM even held for 2h at 1 300 ℃,Furthermore,Nb element can be detected in the cabonitrides co-existing with Ti particles.Finally,the thermodynamics analysis results have a good agreement with above mentioned experimental phenomenon. |
| Keywords: | multi-microalloyed steel carbonitrides thermal stability |
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