<th id="5nh9l"></th><strike id="5nh9l"></strike><th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th><strike id="5nh9l"></strike>
<progress id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"><noframes id="5nh9l">
<th id="5nh9l"></th> <strike id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span>
<progress id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span><strike id="5nh9l"><noframes id="5nh9l"><strike id="5nh9l"></strike>
<span id="5nh9l"><noframes id="5nh9l">
<span id="5nh9l"><noframes id="5nh9l">
<span id="5nh9l"></span><span id="5nh9l"><video id="5nh9l"></video></span>
<th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th>
<progress id="5nh9l"><noframes id="5nh9l">

泡沫鋁及其三明治結構累積疊軋制備

Preparation of aluminum foams and their sandwiches by accumulative roll-bonding

  • 摘要: 通過累積疊軋法制備泡沫鋁.采用稱重法研究泡沫鋁孔隙結構,利用光學顯微鏡觀察泡沫鋁孔隙形貌.發現以TiH2為發泡介質,當發泡溫度660~680℃和發泡時間6~10 min時,利用累積疊軋法制備泡沫鋁的孔隙結構特性最好.發泡溫度和發泡時間的最佳值與發泡劑用量有關,TiH2質量分數為1.5%,在670℃發泡8 min,泡沫鋁的孔隙率可達到42%,孔徑為0.43 mm.以制備的泡沫鋁為夾芯,通過軋制復合制備了TC4鈦合金/泡沫鋁芯和1Cr18Ni9Ti不銹鋼/泡沫鋁芯三明治板.利用光學顯微鏡和能譜儀研究了三明治板的界面.面板與芯板間的化合反應形成了界面的反應層,界面實現了冶金結合.

     

    Abstract: Aluminum foams were prepared by accumulative roll-bonding (ARB). Their porosity and pore mor- phology were studied by weighing and optical microscopy, respectively. It is found that aluminum foams prepared by ARB with TiH2 powder as the blister have optimum performance within the foaming temperature of 660 to 680 ℃ and the foaming time of 6 to 10 min. The optimum values of foaming temperature and foaming time are relevant to blister content. With 1.5% TiH2 at 670 ℃ for 8 min, the porosity and pore size of aluminum foams can reach 42% and 0.43 mm, respectively. Taking the aluminum foam by accumulative roll-bonding as the core, TC4 titanium alloy/aluminum foam and 1Crl8Ni9Ti stainless steel/aluminum foam sandwiches were produced by roll cladding. The interface morphology of these sandwiches was investigated by optical microscopy and energy spectrum analysis. A conversion zone forms by combination reaction between the face plate and the core plate, leading to metallurgical bonding at the interface.

     

/

返回文章
返回
<th id="5nh9l"></th><strike id="5nh9l"></strike><th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th><strike id="5nh9l"></strike>
<progress id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"><noframes id="5nh9l">
<th id="5nh9l"></th> <strike id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span>
<progress id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span><strike id="5nh9l"><noframes id="5nh9l"><strike id="5nh9l"></strike>
<span id="5nh9l"><noframes id="5nh9l">
<span id="5nh9l"><noframes id="5nh9l">
<span id="5nh9l"></span><span id="5nh9l"><video id="5nh9l"></video></span>
<th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th>
<progress id="5nh9l"><noframes id="5nh9l">
259luxu-164