| Effect of Compressive Deformation on Lenticular and Thin Plate Martensitic Transformations |
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| 作者姓名： | 张修睦 齐彦 钟家湘 郭蕴宜 |
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| 作者单位： | Institute of Metal Research Academia Sinica，Shenyang，110015，China.，Beijing University of Science and Technology，Beijing，100081，China.，Beijing University of Science and Technology，Beijing，100081，China.，Institute of Metal Research，Academia Sinica，Shenyang，110015，China. |
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| 摘 要： | The effect of compressive deformation testedabove the M_s temperature on the martensitemorphology in Fe-Ni-C alloys has been studied.Inthe Fe-30Ni-0.12C alloy,the M_s temperature is-50℃ The cylindrical specimens werecompressively deformed at -40℃.The strain rateswere 10,20,30 and 40%.X-ray analysis andmetallographic examination showed that nostrain-induced martensite was found.After quench-ing to -53℃,some thin plates and unusualmorphologies of lenticular martensites with bentand/or broken mid-ribs were observed.In theFe-30Ni-0.34C alloy,the M_s temperature is-120℃.Compressive deformation with differentstrain rates were carried out at room temperature.After quenching to the liquid nitrogen temperature,some bent thin plate matensites(unbroken)occur-red.The transformed twins in bent plate were alsobent and nearly parallel to the γ-α'interfaces.Orientation relationship between austenite and bentmartensite has been examined by means of trans-mission electron microscope.It was proved thatthese unusual morphologies are inherent in thecompressive pre-deformed austenite.
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| 收稿时间： | 1990-09-28 |
Effect of Compressive Deformation on Lenticular and Thin Plate Martensitic Transformations |
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| ZHA NG Xiumu QI Yan ZHONG Jiaxiang GUO Yunyi Institute of Metal Research,Academia Sinica,Shenyang,China.Effect of Compressive Deformation on Lenticular and Thin Plate Martensitic Transformations[J].Journal of Materials Science & Technology,1990,6(5):351-356. |
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| Authors: | ZHA NG Xiumu QI Yan ZHONG Jiaxiang GUO Yunyi Institute of Metal Research Academia Sinica Shenyang China |
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| Affiliation: | ZHA NG Xiumu QI Yan ZHONG Jiaxiang GUO Yunyi Institute of Metal Research,Academia Sinica,Shenyang,,China.Beijing University of Science and Technology,Beijing,,China. To whom correspondence should be addressed. |
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| Abstract: | The effect of compressive deformation tested above the M_s temperature on the martensite morphology in Fe-Ni-C alloys has been studied.In the Fe-30Ni-0.12C alloy,the M_s temperature is -50℃ The cylindrical specimens were compressively deformed at -40℃.The strain rates were 10,20,30 and 40%.X-ray analysis and metallographic examination showed that no strain-induced martensite was found.After quench- ing to -53℃,some thin plates and unusual morphologies of lenticular martensites with bent and/or broken mid-ribs were observed.In the Fe-30Ni-0.34C alloy,the M_s temperature is -120℃.Compressive deformation with different strain rates were carried out at room temperature. After quenching to the liquid nitrogen temperature, some bent thin plate matensites(unbroken)occur- red.The transformed twins in bent plate were also bent and nearly parallel to the γ-α'interfaces. Orientation relationship between austenite and bent martensite has been examined by means of trans- mission electron microscope.It was proved that these unusual morphologies are inherent in the compressive pre-deformed austenite. |
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| Keywords: | martensitic transformation morphology Fe-Ni-C alloy compressive deformation |
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