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Ti,Nb对超低碳Cr18铁素体不锈钢冷轧板再结晶织构的影响孙丹1,陈伟庆1,郑宏光2(1.北京市北京科技大学 冶金与生态工程学院2.宝钢股份不锈钢技术中心,上海 200431)摘 要:研究了添加Ti,Nb对超低碳Cr18铁素体不锈钢冷轧板再结晶织构的影响.试验结果表明,Nb单稳定化和Ti,Nb双稳定化的冷轧板试样在850℃下,随退火保温时间的延长,{111}面织构取向密度增加,而Ti单稳定的冷轧板在退火2min时{111}面织构取向密度值达到最大,然后随保温时间延长{111}面织构密度下降.Ti,Nb双稳定化......
减少冷轧IF钢表面条痕缺陷的生产实践曾建华1,吴国荣2,陈永2,杨素波3,杨金成3,赵克文4(1.四川省攀枝花市 攀枝花钢铁研究院材料研究所2.攀枝花钢铁研究院 材料所,四川攀枝花 6170003.攀钢钢钒公司 技术质量部,四川攀枝花 6170634.攀钢(集团)公司 科技部,四川攀枝花 617067)摘 要:针对攀钢IF钢冷轧板出现的条痕缺陷,在对冷轧板,热轧板及铸坯取样分析的基础上,得出铸坯皮下微裂纹,浇铸过程保护渣卷渣以及铸坯中的夹杂物是IF钢冷轧板条痕缺陷产生的主要原因.通过采取降低钢包顶渣氧化性,控制......
黑龙江三道湾子金矿床锆石U-Pb年龄及其地质意义陈静1,孙丰月1(1.吉林省长春市吉林大学地球科学学院)摘 要:通过LA-ICP-MS锆石原位定年方法,对黑龙江三道湾子金矿床附近的二长花岗岩(三道湾子岩体)和闪长玢岩脉进行了年龄测定.结果显示,原定晚三叠世的二长花岗岩锆石U-Pb年龄为(188.7±1.7)Ma,与区内同期侵入岩及一系列斑岩型,矽卡岩-热液型铜钼铁铅锌矿床共同记录了本区早侏罗世一次重要的成岩成矿事件,该期岩浆热液活动可能与太平洋板块俯冲引起的地壳加厚有关.闪长玢岩脉锆石U-Pb年龄为(112.2......
scattering effects. More importantly, the Fe2 O3-xSx nanoparticles formed intimate heterojunction with CNS and developed the efficient charge transfer by extending interfacial interactions occurred......
with the solution time extending. The mechanical properties of alloy are obviously improved after T6 heat treatment, the tensile strength and micro-hardness show the trend of arising first and descending later......
. The results indicate that the adverse effects of the measurement errors can be mitigated by extending the total sampling period. For reaching a desirable accuracy of source identification, the total...) The measure errors have adverse effects on the accuracy of source identification, which can be mitigated by extending the total sampling period; 3) A longer total sampling period is needed when higher level......
University, Changsha 410083, China) Abstract: Extending Regnell′s research on hierarchical use case model, a hierarchical use case model based on reuse is proposed. The hierarchical model divides use......
kHz exhibited superior tensile properties extending joint efficiency up to 99.20%. It is attributed to the grain refinement in fusion zone leading to the evolution of finer, discrete Laves phase... of base metal grains at the weld interface. Figure 11 shows long columnar dendritic grains extending from fusion zone interface to centre of weld. The incremental levels of ACCF lead to the reduced......
of the Al phase, which is followed by crack extending and converging. The fracture is one course of many alternate sub-processings of various crack sources extending-converging mainly along the Be/Al... extending region of powder HIPed Be-Al alloy 因此,粉末热等静压Be-Al合金的裂纹起源于Be/Al两相界面和Al相的细薄组织和尖锐末梢,裂纹扩展同样沿此途径进行,鲜见从Be相中扩展的区域.主裂纹扩展过程中,当裂纹尖端碰到较大Al相时,Al相塑性变形,裂纹尖端钝化,主裂纹源扩展被抑制；在裂纹前端产生新的裂纹起源,裂纹扩展过程转变为主裂纹源与不断产生的新裂纹源汇合的过......
the electro-etching. The results show that the growing velocity of tunnels decreases with their extending in length and the changing trend of llim can be judged by measuring ?φ, which supplies a convenient......
