| 4Cr14Ni14W2Mo钢氮化层剥落的研究 |
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| 引用本文： | 李见,孙旭东,李在先,李春生. 4Cr14Ni14W2Mo钢氮化层剥落的研究[J]. 金属学报, 1988, 24(1): 47-50 |
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| 作者姓名： | 李见 孙旭东 李在先 李春生 |
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| 作者单位： | 东北工学院材料系，东北工学院，东北工学院，东北工学院 教授，沈阳南湖 |
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| 摘 要： | Unthank等人曾指出,含Cr高的奥氏体不锈钢在600～800℃氮化时,将沿晶界形成大量的CrN,并可能导致沿晶开裂,造成氮化层剥落.Kindlimann和Ansell认为,氮化表面上Fe或Ni-Fe的氮化物增到一定厚度时将产生“白亮层”,冷却时可能剥落。高濑孝夫在讨论氮化温度对18-8钢氮化层脆性影响时指出,低温氮化易出现氮化层剥落。本工作通过氮化前对试样作适当的预先热处理找到了解决氮化层剥落的方法,并探明了氮化层剥落的原因。
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| 关 键 词： | 钢的氮化 氮化层剥落 耐热钢 |
| 收稿时间： | 1988-01-18 |
| 修稿时间： | 1988-01-18 |
SPALLING OF NITRIDED LAYER OF AUSTENITIC STEEL 4Cr14Ni14W2Mo |
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| LI Jian,Professor,Northeast University of Technotogy,Shenyang,SUN Xudong,LI Zaixian,LI Chunsheng Northeast University of Technology. SPALLING OF NITRIDED LAYER OF AUSTENITIC STEEL 4Cr14Ni14W2Mo[J]. Acta Metallurgica Sinica, 1988, 24(1): 47-50 |
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| Authors: | LI Jian Professor Northeast University of Technotogy Shenyang SUN Xudong LI Zaixian LI Chunsheng Northeast University of Technology |
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| Abstract: | The tendency of spalling of nitrided layer of an austenitic heatresistant steel 4Cr14Ni14W2Mo has been studied experimentally. It was found thatthe residual deformation retained in the rolled steel is the root that causes thespalling of nitrided layer of the steel. If the work hardening state is removed by asuitable heat treatment before nitriding, the spalling of nitrided layer can be com-pletely avoided. |
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| Keywords: | nitriding spalling heat resistant steel |
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