| 一种核级316LN钢的相图计算与微合金化设计 |
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| 引用本文： | 张文辉,王振华,赵德利,吕知清,白兴红,傅万堂.一种核级316LN钢的相图计算与微合金化设计[J].东北重型机械学院学报,2011(6):519-522. |
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| 作者姓名： | 张文辉 王振华 赵德利 吕知清 白兴红 傅万堂 |
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| 作者单位： | [1]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004 [2]中国第一重型机械集团股份公司,黑龙江齐齐哈尔161042 [3]燕山大学机械工程学院,河北秦皇岛066004 |
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| 基金项目： | 国家自然科学基金资助项目（51101137,51171161）;国家核电重大专项课题（2011ZX06004-016） |
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| 摘 要： | 用热力学方法计算了一种核级316LN钢及其在Nb、V微合金化条件下的伪二元平衡相图,研究了不同温度下钢的平衡相组成。结果表明,316LN钢中的主要析出相为Cr2N、M23C6、和相,Nb微合金化316LN钢中会形成含C的MX,有望提高材料的力学性能和耐晶间应力腐蚀性能,V微合金化316LN钢中会形成VN,但对稳定C的作用不大。
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| 关 键 词： | 316LN钢 相图 微合金化 相组成 |
Phase diagram calculation and micro-alloying design of nuclear grade 316LN steel |
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| Authors: | ZHANG Wen-hui WANG Zhen-hua ZHAO De-li LU Zhi-qing BAI Xing-hong FU Wan-tang |
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| Affiliation: | 1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei 066004. China; 2. China FirstHeavyIndustries, Qiqihar, Heilongjiang 161042, China; 3. College ofMechanicalEngineering, Yanshan University, Qinhuangdao, Hebei 066004, China) |
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| Abstract: | Pseudo-equilibrium phase diagrams of non- and micro-alloyed nuclear grade 316LN steels are calculated through the thermodynamic method. The phase contents of the steels under different temperatures are also studied. It is found that under equilibrium conditions the precipitates in 316LN steel are Cr2N, M23C6, X and aphase, C-containing MX is observed to form in the Nb micro-alloyed 316LN steel, which might enhance the mechanical properties and intergranular stress corrosion resistance; VN almost has no significant effect in stabilizing C in the V micro-alloyed 316LN steel. |
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| Keywords: | 316LN steel phase diagram micro-alloying phase component |
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