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冷轧压下率对铁素体区热轧Ti-IF钢冷轧板深冲性能的影响 总被引:2,自引:0,他引:2
研究了于铁素体区润滑热轧的Ti-IF钢在随后的冷轧及退火工艺中深冲性能的变化.结果表明,在冷轧压下率为75 %时IF钢所获得的r值最高.织构分析表明,于铁素体区润滑热轧的IF钢具有较强的{111}∥ND再结晶织构组分;冷轧时采用75 %的压下率和随后的退火工艺可获得最强的{111}∥ND再结晶织构;冷轧压下率进一步增加时,{111}∥ND再结晶织构将会削弱.这种织构变化与冷轧时ND纤维晶粒内部的剪切带变化有关. 相似文献
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研究了于铁素体区润滑热轧的Ti-IF钢在随后的冷轧及退火工艺中深冲性能的变化。结果表明,在冷轧压下量为75%时IF钢所获得的r值最高,织构分析表明,于铁素体区润滑热轧的IF钢具有较强的[111]//ND再结晶织物组分;冷轧时采用75%的压下量和随后的退火工艺可获得最强的[111]//ND再结晶织构,冷轧压下量进一步增加时。[111]//ND再结晶织构将会削弱。这种织构变化与冷轧时ND纤维晶粒内部的剪切带变化有关。 相似文献
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在实验室条件下分别进行了Ti—IF钢铁素体区与奥氏体区热轧、冷轧和退火试验。通过拉伸试验、金相观察、织构分析等比较了两种不同轧制工艺下的组织性能。试验结果表明,奥氏体区轧制下Ti—IF钢的屈服强度为157MPa,抗拉强度308MPa,延伸率49.1%,11值0.26,r值2.03;铁素体区轧制Ti—IF钢的屈服强度127MPa,抗拉强度306MPa,延伸率49.5%,n值0,31,r值2.43。与奥氏体区轧制相比,铁素体区轧制具有更低的屈服强度,高的n值,高的r值。 相似文献
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采用化学相分析及透射电镜(TEM),对ASP线生产的Ti-IF钢析出相进行了定性和定量的研究,并利用ODF分析方法,揭示了生产过程中Ti-IF钢的织构演变规律.结果表明:析出相主要由TiN、Ti2CS、Ti(C,N)和FeTiP粒子组成.热轧后即发现少量FeTiP粒子,呈球状或椭球状,大小在100nm以下.冷轧过程是深冲织构{111}<110>和{111}<112>形成的重要阶段.冷轧织构由较强的α和γ纤维织构组成.退火过程中,γ织构不断增强同时伴随着α织构的不断减弱,最终形成了沿γ纤维的{111}再结晶织构. 相似文献
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一种能满足汽车制造厂生产难冲件要求的新型超深冲冷轧薄板,即钛、铌复合添加的无间隙原子钢(IF钢)BWJ18于1990年底在宝钢试制成功。实验室试验研究对成分、轧制工艺和退火工艺参数的选择提供了可靠的依据。 BWJ18超深冲冷轧薄板,其工艺流程为转炉冶炼→RH真空脱气→连铸→热轧→酸洗→冷轧→连续退火→平整。 BWJ18超深冲冷轧薄板的成品综合性能良好,其塑性应变比r值,加工硬化指数n值、延伸率δ都较高,无时效,无屈服平台。 BWJ18超深冲冷轧薄板在汽车制造厂的实冲试验,表明宝钢生产的IF钢能满足汽车厂生产难冲件的要求。 相似文献
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<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic 相似文献
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正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field, 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure 相似文献
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《China Nonferrous Metals Monthly》2014,(10)
正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year, 相似文献
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《China Nonferrous Metals Monthly》2014,(12)
正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform. 相似文献
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正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness. 相似文献
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正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully. 相似文献