| 堆内构件材料14Cr17Ni2马氏体不锈钢锻件特性研究 |
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| 引用本文： | 王庆田,罗 英,杜 华,段春辉,王留兵,胡朝威,王仲辉,陈 忻.堆内构件材料14Cr17Ni2马氏体不锈钢锻件特性研究[J].核动力工程,2018,39(6):161-166. |
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| 作者姓名： | 王庆田 罗 英 杜 华 段春辉 王留兵 胡朝威 王仲辉 陈 忻 |
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| 摘 要： | 针对核反应堆堆内构件用14Cr17Ni2马氏体不锈钢锻件连续2次出现锻造裂纹的原因进行了分析，通过理论相图计算，并试验研究了加热温度、保温时间以及锻造温度对δ铁素体含量及形貌的影响，得出加热温度越高、保温时间越长、锻造温度越低越容易出现锻造裂纹。结果表明，改进加热温度、保温时间并控制终锻温度，可以避免14Cr17Ni2马氏体不锈钢锻件缺陷的产生。
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| 关 键 词： | 堆内构件 14Cr17Ni2 马氏体不锈钢 锻造裂纹 |
Research of Characteristics of?14Cr17Ni2 Martensitic Stainless Steel Forging Used for Reactor Internals |
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| Abstract: | The paper analyzes the reasons of cracks?occurred?twice in the forging of 14Cr17Ni2 Martensitic Stainless Steel forging used for the reactor internals. Through the calculation of phase diagram, and the experimental research of the influence on?the content and pattern of δ ferrite in different heating temperature, different holding time and forging temperature, the paper concludes?that the higher the heating temperature, the longer the holding time, the lower the forging temperature, the more easy the cracks appearance. Results show that?no crack appears in the forging after the improvement of?the heating temperature, holding time?and?finish-forging temperature. |
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