预热对二次泡沫化法制备泡沫铝合金孔结构的影响
Effect of Preheating on Cell-structure of Al Alloy Foam Prepared by Two-step Foaming Method
摘 要
采用温度实时采集及位移传感器计算机系统对二次泡沫化温度和时间等参数对制备泡沫铝合金的孔结构(孔径及其均匀性)及孔形成过程的影响进行了研究,并探讨了预热对二次泡沫化法制备泡沫铝合金孔结构的影响.结果表明:二次泡沫化过程可分为缓慢增长、快速增长和坍塌三个阶段;二次泡沫化过程中的非均匀温度场是导致难以获得孔结构均匀泡沫铝合金的主要原因;采用预热方法可显著改善二次泡沫化过程中的温度场,从而获得孔结构均匀性较好的泡沫铝合金.
二次泡沫化
预热
温度
孔结构
Al alloy foam
two-step foaming
preheating
temperature
cell-structure
Abstract
An in-phase system with computer and displacement sensors for temperature collection were developed to investigate experimentally the influence of temperature and time during the second step foaming procedure on the characteristics of cell-structure (diameter and uniformity) of Al alloy foam.The effect of preheating technology on cell-structure of Al alloy foam was also discussed.The results show that the process of two-step foaming could be divided into three phases of initiation,raising and collapse stage.Non-uniform temperature field during two-step foaming caused the difficulty of achieving uniform cell-structure of Al alloy foam.Al alloy foam with satisfactory cell-structure could be fabricated through promoting the temperature condition by preheating procedure.
中图分类号 TG146
所属栏目 新材料 新工艺
基金项目 国家重点基础研究发展计划资助项目(2006CB601201);国家自然科学基金资助项目(50471031)
收稿日期 2008/6/19
修改稿日期 2009/3/25
网络出版日期
作者单位点击查看
备注褚旭明(1977-),男,山西交城人,博士研究生.
引用该论文: CHU Xu-ming,WANG Hui,DAI Ge,ZHANG Yong-ming,HE Si-yuan,HE De-ping. Effect of Preheating on Cell-structure of Al Alloy Foam Prepared by Two-step Foaming Method[J]. Materials for mechancial engineering, 2009, 33(6): 52～54
褚旭明,王辉,戴戈,张勇明,何思渊,何德坪. 预热对二次泡沫化法制备泡沫铝合金孔结构的影响[J]. 机械工程材料, 2009, 33(6): 52～54
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参考文献
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【2】ASHBY M F,LU Tian-jian.Metal foams:a survey[J].Science in China B,2003,46(6):521-532.
【3】KENNEDY A R,ASAVAVISITHCHAI S.Effect of ceramic particle additions on foam expansion and stability in compacted Al-TiH2 powder precursors[J].Advanced Engineering Materials,2004,6(6):400-406.
【4】GERGELY V,CLYNE B.The formgrip process:foaming of reinforced metals by gas release in precursors[J].Advanced Engineering Materials,2000,2(4):175-178.
【5】尚金堂,何德坪.氢化钛二次热分解与铝合金的二次泡沫化[J].中国科学(B),2005,35(4):280-285.
【6】左孝青,梅俊,熊恒,等.泡沫铝二次发泡工艺用先驱体中TiH2发泡剂的分散性[J].中国有色金属学报,2008,18(1):78-82.
【7】何德坪,尚金堂,褚旭明,等.二次泡沫化制备泡沫铝合金制品的方法:中国,ZL200610088246.4[P].2008-06-04.
【8】褚旭明,王辉,何思渊,等.泡沫铝合金球形件的二次发泡法制备成型[J].哈尔滨工程大学学报,2008,29(4):420-424.
【9】褚旭明,王辉,何德坪,等.泡沫铝合金异型件形成过程中的冶金结合[J].材料研究学报,2009,23(1):27-31.
【10】SHANG J T,CHU Xu-ming,HE De-ping.Preparation of three-dimensional shaped aluminum alloy foam by two-step foaming[J].Materials Science and Engineering B,2008,151:157-162.
【11】何德坪,褚旭明,何思渊,等.二次泡沫化制备不可熔解型中空异型件泡沫铝合金的方法:中国,ZL200710023491.1[P].2009-02-11.
【12】何德坪,褚旭明,何思渊,等.二次泡沫化制备可溶解型中空异型件泡沫铝合金的方法:中国,ZL200710023582.5[P].2009-01-07.
【13】邹毅,何德坪,蒋家桥.新型球形孔低孔隙率高强度泡沫铝合金[J].中国科学(B),2004,34(2):168-176.
【14】康永林,毛卫民,胡壮麒.金属材料半固态加工理论与技术[M].北京:科学出版社,2004.
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