Strengthening Mechanism of a New 700 MPa Hot Rolled High Strength Steel

来源 :Journal of Iron and Steel Research(International) | 被引量 : 0次 | 上传用户:yindiantiffany
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 microstructural evolution in a 700 MPa hot rolled high strength steel was analyzed in terms of strengthening mechanisms.The results show that the hot rolled sheet steel has yield strength of 710 MPa with good elongation and toughness.The strength of the developed 700 MPa hot rolled high strength steel is derived from the cumulative contribution of fine grain size,dislocation hardening and precipitation hardening.The fine grain strengthening and precipitation hardening are the dominant factors responsible for such high strength,and the amount of precipitation hardening is two or four times higher than that of conventional microalloyed hot rolled sheet steels reported in the past.Good toughness is due to refinement of ferrite grain size. The microstructural evolution in a 700 MPa hot rolled high strength steel was analyzed in terms of strengthening mechanisms. The results show that the hot rolled sheet steel has a yield strength of 710 MPa with good elongation and toughness. Strength of the developed 700 MPa hot rolled high strength steel is derived from the cumulative contribution of fine grain size, dislocation hardening and precipitation hardening. fine grain strengthening and precipitation hardening are the dominant factors responsible for such high strength, and the amount of precipitation hardening is two or four times higher than that of conventional microalloyed hot rolled sheet steels reported in the past. Good toughness is due to refinement of ferrite grain size.
其他文献
有你,我生活在如画的风景里。  一直以来,我都和你在风景里一起哭泣着、微笑着、彷徨着、坚定着。有时,我们迷失在风景中;有时,我们渴望冲破风景的幻境;有时,我们迎风破雨,只为到达那对面的彼岸。你,是我生命的诤友。朋友,有你真好!  有你,我学会了放弃。  当我们一起仰望星空,用冷静思索人生时,你给我讲了这样一个故事,你说:“有个老爷爷第一次坐火车,挤上车后,他的一只鞋掉到了车外,当他人为此感到可惜与
期刊
Two unusual one-dimensional(1-D) compounds,viz.[Co(Medpq)(QUI)·H2O]2n· 2.4nH2O 1 and [Cd(Medpq)(QUI)·H2O]n·nH2O 2,were synthesized by the combination of two
2010年1月8日,由中国大学生体育协会主办、中国珠海卓越高尔夫文化发展有限公司承办的两岸四地大学生高尔夫球邀请赛在厦门东方高尔夫乡村俱乐部结束。 On January 8, 2010,
本学期,我们五校联合开展了一次教学联谊活动,在此次教学展示中,学校、老师、学生对我的的配合和帮助,让我真的很是感动。课后经过专家、领导和其他老师的点评,心中感触颇多,
4-Amino-3-mercapto-6-methyl-l,2,4-triazin-5(4H)-one 1 converted to 4-amino-6-methy-3-(methylthio)-1,2,4-triazin-5(4H)-one by methylation with methyl iodide.Cont
跨茂湛铁路转体桥主桥采用平面转体法施工,平面转体施工技术代表的现代技术得到了快速的发展。因而本文正是基于这一视角,从桥梁平面转体施工技术的发展概述入手,结合跨茂湛
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
陈坤龙1972年开始割漆。由于他虚心学习,勤于钻研,较快地掌握了割漆技术。他割漆一是割口小,口形整齐,伤树轻,愈合快。据随机抽样的245个1979年割口(牛鼻形刀口)统计,已愈合
如何理解和认识林业经济效益,不仅是一个理论问题,而且是一个十分重要的现实问题。有人认为,讲求林业经济效益,就是要注意提高木材生产的产值和利润。长期以来,我们也就是在
“青花鱼、鳘鱼和沙丁鱼是海、陆、空馋嘴食客们的食物。鱼儿在海中时刻都有死亡的危险。饿着肚子的海中食客,环绕在鱼群的周围,空中的食客飞翔在海面之上,陆上的食客在岸边等着它们。人类在攫取一份海味时,特别凶狠。人们组织起了船队,和海军一块儿出去捕鱼。人们把鱼放在太阳下晒、腌、熏,打包起来。虽然能捕捉得这样凶狠,但并不见鱼儿减少。因为,弱者多得不计其数。一尾鳘鱼能产子900万!那些馋嘴食客怎样能把这样一个
期刊