Effects of Phosphorus Grain Boundary Segregation and Hardness on the Ductile-to-Brittle Transition f

来源 :Journal of Wuhan University of Technology(Materials Science | 被引量 : 0次 | 上传用户:glory001
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The combined effect of phosphorus grain boundary segregation and hardness on the ductile- to-brittle transition was examined for a P-doped 2.25Cr1Mo steel by using Auger electron spectroscopy in conjunction with hardness measurements, Charpy impact tests and scanning electron microscopy. With prolonging time at 540 oC after water quenching from 980 oC, the segregation of phosphorus increases and the hardness decreases. The DBTT (FATT) increases with increasing phosphorus segregation and decreases with decreasing hardness. The effect of phosphorus segregation is dominant until 100 h aging and after that the hardness effect becomes dominant. This effect makes the DBTT (FATT) decrease with further prolonging ageing time although the segregation of phosphorus still increases strongly. The combined effect of phosphorus grain boundary segregation and hardness on the ductile-to-brittle transition was examined for a P-doped 2.25Cr1Mo steel by using Auger electron spectroscopy in conjunction with hardness measurements, Charpy impact tests and scanning electron microscopy. With prolonging time at 540 oC after water quenching from 980 oC, the segregation of phosphorus increases and the decrease of hardness. The DBTT (FATT) increases with increasing phosphorus segregation and decreases with decreasing hardness. The effect of phosphorus segregation is dominant until 100 h aging and after that This effect makes the DBTT (FATT) decrease with further prolonging aging time although the segregation of phosphorus still increasing strongly.
其他文献
威尼斯素有“亚得里亚海明珠”之称,它既是旅游胜地,又是意大利的重要港口,更是座船与桥的城市。威尼斯城四周环海,位于威纳托省(Veneto)的威尼斯,其实包括了一百座大大小小
饥饿的祥林嫂带着她的一只空碗,怀着对地狱的恐惧,死去了。但她的魂灵却随着时间的隧道,来到了21世纪。 一 The hungry woodsman took her empty bowl and died with fear o
从日企不受重视的小职员,到如今被誉为“蓝光之父”的新晋诺奖得主,中村修二带给人们更多的是思考。2014年10月7日,诺贝尔奖委员会宣布将2014年诺贝尔物理学奖授予日本的赤崎
不知不觉间,童年慢慢走远。终于有一天,你不再可以过六一儿童节,你不再可以任性撒娇,因为你已经长大。这时,也许你会感到失落,也许你就再不屑于看小孩子的童话书了。但是,请
在《杨修之死》一文中,我们大都可以看出杨修为人恃才放旷,导致了他后来惨死。但反过来想想,我觉得杨修倒是英雄,因为他至少活得自在,在他的有生之年发射出了应有的光芒。或
芳春:春天天气渐暖,百草萌发,万木滋长,奇花异草斗芳菲,于是春天又有“芳春”的美称。陆机诗云:“烈心厉劲秋,丽服鲜芳春。”阳春:我国江南一带,人们称春天为“阳春”。李白
内地中国人的英文已经有了长足进步,但是却随之产生了一种非常错误的观念,那就是对自己的母语不敬。 Mainland Chinese have made great strides in English, but there has
2002年1月,成都理工大学博物馆、重庆自然博物馆和内蒙古自然博物馆赴台湾举办“中华恐龙大展”,我作为成都理工大学博物馆第一批随展人员留在台北,没承想却经历了此生最大
班里出了失窃事件,我很生气,也很着急。对学生来说,200块钱不是小数目。我坐立不安,苦思冥想中,突然想起了曾经读过的一则教育故事。讲述故事的老师也遇到过类似的事情,他解
随着天津滨海新区进一步开发开放和全国综合配套改革试验区建设的深入推进,天津市大港区面临千载难逢的重大历史机遇,站在了一个新的腾飞起点,进入了一个新的上升期。如何把