本文主要研究内容
作者毛晶晶（2019）在《退火工艺对铝铁合金冷轧板组织及性能的影响》一文中研究指出：铝铁合金具有耐热、耐磨、抗腐蚀、高温下抗氧化及抗硫化腐蚀等优良性能,因此在航空航天、兵器和汽车领域有着广阔的应用前景。但铝铁合金中存在的Al-Fe相一般呈针状或片状,会严重割裂基体,造成应力集中,大大降低铝铁合金的力学性能。并且经冷轧变形的金属会发生加工硬化不利于后续加工。因此研究稀土元素La对冷轧铝铁合金退火过程中组织及性能的作用具有重要意义。本课题以内蒙古中拓铝业有限公司生产的铝铁合金冷轧板为研究对象,采用微观组织表征及力学性能相结合的方法,系统研究了再结晶退火过程中不同La添加量铝铁合金冷轧板的组织及力学性能的变化,探究了铝铁合金冷轧板再结晶织构的演变规律。对La添加量分别为0、0.2wt.%、0.4wt.%的铝铁合金冷轧板进行恒温退火和恒时退火。实验结果表明,添加La元素可通过其变质作用对铝铁相形貌和尺寸上有所改变,使得冷轧态的铝铁相由粗大的长条状向球状发展,完成再结晶的铝铁相宽度方向上尺寸有了显著的减小。恒时退火条件下,三种铝铁合金315℃保温3小时后完成再结晶。三种铝铁合金在部分再结晶时拉伸性能存在一定差异,稀土La的添加降低了材料的屈服强度、抗拉强度,提高了材料的延伸率,并且La添加量为0.2wt.%的铝铁试样相比0.4wt.%的试样具有较高的抗拉强度与延伸率。而完成再结晶后,三种铝铁合金的抗拉强度、屈服强度和延伸率相差不大。恒温条件下,315℃恒温条件1h便完成再结晶,365℃条件下5min便已完成再结晶。三种合金的抗拉强度、屈服强度随保温时间的变化趋势大致相同,La添加量为0.2wt.%的铝铁合金其抗拉强度和屈服强度均略高于其余两种合金。对La添加量为0.2wt.%的铝铁合金冷轧板进行宏观织构及微观织构的测定,以及对退火再结晶过程中晶粒尺寸、晶粒间取向差进行统计分析。实验结果表明,宏观织构在冷轧时以β取向线为主,而在再结晶退火过程中轧制S{124}<211>向R{124}<211>转变,所生成的R织构在欧拉空间中以取向线出现的位置与β线相似。冷轧态的铝铁合金中存在很多取向的晶粒,各种取向的晶粒相间分布,以<001>取向及<111>取向为主,此时大量的碎晶及亚晶分布在样品空间中,形成大量的大角度晶界;在部分再结晶过程中,<111>取向晶粒几乎占据了整个组织空间,表现出较为单一的取向,合金中以小角度晶界及亚晶为主;当完全再结晶时,晶粒的晶界清晰,合金中以<001>取向和<111>取向的晶粒为主,取向的多样性增强,大角度晶界略有增加。综合三种La添加量的铝铁合金在不同热处理状态下的微观组织、硬度及拉伸性能,当La添加量为0.2wt.%时,铝铁合金在冷轧态及完全再结晶后均具有较好的微观组织,在部分再结晶及完全再结晶后均具有较好的抗拉强度和延伸率。另外,Fe元素的作用使得铝铁合金完全再结晶后形成强烈的R{124}<211>。
Abstract
lv tie ge jin ju you nai re 、nai mo 、kang fu shi 、gao wen xia kang yang hua ji kang liu hua fu shi deng you liang xing neng ,yin ci zai hang kong hang tian 、bing qi he qi che ling yu you zhao an kuo de ying yong qian jing 。dan lv tie ge jin zhong cun zai de Al-Fexiang yi ban cheng zhen zhuang huo pian zhuang ,hui yan chong ge lie ji ti ,zao cheng ying li ji zhong ,da da jiang di lv tie ge jin de li xue xing neng 。bing ju jing leng ga bian xing de jin shu hui fa sheng jia gong ying hua bu li yu hou xu jia gong 。yin ci yan jiu xi tu yuan su Ladui leng ga lv tie ge jin tui huo guo cheng zhong zu zhi ji xing neng de zuo yong ju you chong yao yi yi 。ben ke ti yi nei meng gu zhong ta lv ye you xian gong si sheng chan de lv tie ge jin leng ga ban wei yan jiu dui xiang ,cai yong wei guan zu zhi biao zheng ji li xue xing neng xiang jie ge de fang fa ,ji tong yan jiu le zai jie jing tui huo guo cheng zhong bu tong Latian jia liang lv tie ge jin leng ga ban de zu zhi ji li xue xing neng de bian hua ,tan jiu le lv tie ge jin leng ga ban zai jie jing zhi gou de yan bian gui lv 。dui Latian jia liang fen bie wei 0、0.2wt.%、0.4wt.%de lv tie ge jin leng ga ban jin hang heng wen tui huo he heng shi tui huo 。shi yan jie guo biao ming ,tian jia Layuan su ke tong guo ji bian zhi zuo yong dui lv tie xiang xing mao he che cun shang you suo gai bian ,shi de leng ga tai de lv tie xiang you cu da de chang tiao zhuang xiang qiu zhuang fa zhan ,wan cheng zai jie jing de lv tie xiang kuan du fang xiang shang che cun you le xian zhe de jian xiao 。heng shi tui huo tiao jian xia ,san chong lv tie ge jin 315℃bao wen 3xiao shi hou wan cheng zai jie jing 。san chong lv tie ge jin zai bu fen zai jie jing shi la shen xing neng cun zai yi ding cha yi ,xi tu Lade tian jia jiang di le cai liao de qu fu jiang du 、kang la jiang du ,di gao le cai liao de yan shen lv ,bing ju Latian jia liang wei 0.2wt.%de lv tie shi yang xiang bi 0.4wt.%de shi yang ju you jiao gao de kang la jiang du yu yan shen lv 。er wan cheng zai jie jing hou ,san chong lv tie ge jin de kang la jiang du 、qu fu jiang du he yan shen lv xiang cha bu da 。heng wen tiao jian xia ,315℃heng wen tiao jian 1hbian wan cheng zai jie jing ,365℃tiao jian xia 5minbian yi wan cheng zai jie jing 。san chong ge jin de kang la jiang du 、qu fu jiang du sui bao wen shi jian de bian hua qu shi da zhi xiang tong ,Latian jia liang wei 0.2wt.%de lv tie ge jin ji kang la jiang du he qu fu jiang du jun lve gao yu ji yu liang chong ge jin 。dui Latian jia liang wei 0.2wt.%de lv tie ge jin leng ga ban jin hang hong guan zhi gou ji wei guan zhi gou de ce ding ,yi ji dui tui huo zai jie jing guo cheng zhong jing li che cun 、jing li jian qu xiang cha jin hang tong ji fen xi 。shi yan jie guo biao ming ,hong guan zhi gou zai leng ga shi yi βqu xiang xian wei zhu ,er zai zai jie jing tui huo guo cheng zhong ga zhi S{124}<211>xiang R{124}<211>zhuai bian ,suo sheng cheng de Rzhi gou zai ou la kong jian zhong yi qu xiang xian chu xian de wei zhi yu βxian xiang shi 。leng ga tai de lv tie ge jin zhong cun zai hen duo qu xiang de jing li ,ge chong qu xiang de jing li xiang jian fen bu ,yi <001>qu xiang ji <111>qu xiang wei zhu ,ci shi da liang de sui jing ji ya jing fen bu zai yang pin kong jian zhong ,xing cheng da liang de da jiao du jing jie ;zai bu fen zai jie jing guo cheng zhong ,<111>qu xiang jing li ji hu zhan ju le zheng ge zu zhi kong jian ,biao xian chu jiao wei chan yi de qu xiang ,ge jin zhong yi xiao jiao du jing jie ji ya jing wei zhu ;dang wan quan zai jie jing shi ,jing li de jing jie qing xi ,ge jin zhong yi <001>qu xiang he <111>qu xiang de jing li wei zhu ,qu xiang de duo yang xing zeng jiang ,da jiao du jing jie lve you zeng jia 。zeng ge san chong Latian jia liang de lv tie ge jin zai bu tong re chu li zhuang tai xia de wei guan zu zhi 、ying du ji la shen xing neng ,dang Latian jia liang wei 0.2wt.%shi ,lv tie ge jin zai leng ga tai ji wan quan zai jie jing hou jun ju you jiao hao de wei guan zu zhi ,zai bu fen zai jie jing ji wan quan zai jie jing hou jun ju you jiao hao de kang la jiang du he yan shen lv 。ling wai ,Feyuan su de zuo yong shi de lv tie ge jin wan quan zai jie jing hou xing cheng jiang lie de R{124}<211>。
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论文详细介绍
论文作者分别是来自山东大学的毛晶晶，发表于刊物山东大学2019-07-16论文，是一篇关于铝铁合金论文,稀土元素论文,退火工艺论文,再结晶论文,织构论文,山东大学2019-07-16论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自山东大学2019-07-16论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。