| 一种超高强度不锈钢超细化组织TEM研究 |
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| 引用本文： | 赵振业,李春志,李志,刘天琦,马新闻,孙继光.一种超高强度不锈钢超细化组织TEM研究[J].航空材料学报,2005,25(2):1-5. |
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| 作者姓名： | 赵振业 李春志 李志 刘天琦 马新闻 孙继光 |
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| 作者单位： | 北京航空材料研究院,北京,100095;北京有色金属研究总院,北京,100088 |
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| 摘 要： | 用透射电镜(TEM)研究了一种试验超高强度高韧性不锈钢Fe 14Cr 12Co 5Mo Me超细化组织。研究得出,淬火时M体板条被小M体片簇011]切截再细化;回火时形成的逆转变奥氏体 (Ar)切截M体板条束和板条使其再细化,Ar体与M体基体取向符合K S关系011-]A //111]M, (11-1-)A //(11-0)M。切截形成的超细化M体板条和Ar体向M体相变塑性是试验钢强 韧化的重要机理。
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| 关 键 词： | 机理 马氏体板条 逆转变奥氏体 |
| 文章编号： | 1005-5053(2005)02-0001-05 |
| 修稿时间： | 2004年12月29 |
Observation of the Microstructure in an Ultra-high Strength and High Toughness Stainless Steel |
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| ZHAO Zhen-ye,LI Chun-zhi,LI Zhi,LIU Tian-qi,MA Xin-wen,SUN Ji-guang.Observation of the Microstructure in an Ultra-high Strength and High Toughness Stainless Steel[J].Journal of Aeronautical Materials,2005,25(2):1-5. |
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| Authors: | ZHAO Zhen-ye LI Chun-zhi LI Zhi LIU Tian-qi MA Xin-wen SUN Ji-guang |
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| Institution: | ZHAO Zhen-ye~1,LI Chun-zhi~1,LI Zhi~1,LIU Tian-qi~1,MA Xin-wen~1,SUN Ji-guang~2 |
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| Abstract: | The ultrafine microstructure in an ultra-high strength and high toughness stainless steel was observed by TEM. The results showed that martensitic laths (M) were broken to pieces by the small martensitic lath cluster (M_n) which was formed during quenching. Martensitic laths and martensitic packets were broken also to pieces by the reversed austenite. The orientation between matrix and revered austenie met the K-S relationship01(1)-]_A//111]_M,(1(1)-(1)-)_A//(1(1)-0)_M. Both the ultrafine martensitic lath resulted from breaking and transformation plasticity induced by reverse austenite were the important mechanisms of strength-toughen in the experimental steel. |
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| Keywords: | mechanism martensitic lath reverse austenite |
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