【摘 要】
：
The microsturctural transformation of austenite grain,pearlite interlamellar spacing,and lamellar cementite thickness of spring steel 60Si2MnA for railway were
【机 构】
：
School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100
论文部分内容阅读
The microsturctural transformation of austenite grain,pearlite interlamellar spacing,and lamellar cementite thickness of spring steel 60Si2MnA for railway were studied in the hot-rolled and reheated states.Furthermore,the effect of microstructural characterization on its final mechanical properties was discussed.The results showed that as far as 60Si2MnA,the pearlite interlamellar spacing determined the hardness,whereas,the austenite grain determined the toughness.Compared with microstructure and mechanical properties in the hot-rolled state,after reheating treatment at 950℃,its average grain sizes are apparently fine and the pearlite interlamellar spacing and lamellar cementite thickness coarsen to some extent,but both hardness and impact toughness increase to HRC 48 and 8.5 J.respectively.In the course of making spring,the optimum reheating austenitizing temperature for the 60Si2MnA steel is 950℃.
其他文献
首次实现了从冶炼→CSP→常化→冷轧退火→成品检测等CSP工艺生产高牌号无取向电工钢的实验室全工序过程模拟,并对铸坯、热轧板及冷轧板中的组织及夹杂物进行了具体分析。结
从尿素生产工艺特点、介质、材料特性及尿素生产中的腐蚀机理分析尿素生产设备的腐蚀情况
From the urea production process characteristics, media, material properties
The molten liquid discrete flow inside a packed bed is a typical transport phenomenon in the blast furnace.As for the reportcd mathematieal models presenting th
On the basis of the thermodynamic analysis and fundamental study in the laboratory,the equilibrium of the Ti-Al-O system was investigated.The results showed tha
采用热压缩和热拉伸试验方法,对节镍型双相不锈钢00Cr21Mn5Ni1N的高温变形抗力、高温塑性及高温变形时奥氏体相的数量进行了研究。结果表明,00Cr21Mn5Ni1N双相不锈钢在950~1
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
According to the theories for stretch reducing process and steel tube plastic deformation,the energy method was used To mesh the rolled deformation zone of the
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥
A new method was developed by a thermal wear machine to evaluate the thermal wear of rolls in steel rolling process.The steel strip and rolls were simulated by