期刊文献+

Rheological characteristics of injection molded titanium alloys powder 被引量:3

注射成形钛合金粉末流变特性(英文)
下载PDF
导出
摘要 Ti-6Al-4V alloy powder was taken as raw material. 60%(mass fraction) paraffin, 35%low density polyethylene and 5%stearic acid were employed as binders to prepare injection feedstocks. Capillary rheometer was adopted to determine the rheological parameters and to analyze the rheological properties of the feedstocks at different milling time, powder loading and temperature. It is indicated through the results that the viscosity increases and the value of n decreases with the increase of milling time. The more the powder loading is, the higher the viscosity is. The empirical formula on the relationship between the viscosity and the powder loading is: ηr=η/ηb=A(1-Ф/Фmax)/^- m . The value m is calculated as 0.33. The flow activation energy Ea decreases with the increase of shear rate. 以Ti 6Al 4V合金粉末为原料,选用60%(质量分数)石蜡、35%低密度聚乙烯和5%硬脂酸为粘结剂配方制备注射成型喂料。采用毛细管流变仪测定喂料的流变参数,分析不同球磨时间、粉末装载量、温度下喂料的流变学性能。结果表明:随着球磨时间的增加,喂料粘度增加,n值减小;粉末装载量越高,喂料的粘度值越大,而且粘度与粉末装载量满足经验公式:mA/(1/)rbmax,经计算,m的值为0.33。粘性流动激活能Ea值随剪切速率的增加而减小。
出处 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第9期2605-2610,共6页 中国有色金属学报(英文版)
关键词 injection molding titanium alloy FEEDSTOCK rheological properties 注射成形 钛合金 喂料 流变特性
  • 相关文献

参考文献16

  • 1OBASI G C, FERR10 M, BORMANN R, EBEL T. Influence of processing parameters on mechanical properties of Ti-6A1-4V alloy fabricated by MIM [J]. Materials Science and Engineering A, 2010, 527: 3929-3935.
  • 2FERRI O M, BORMANN R, EBEL T. Influence of surface quality and porosity on fatigue behavior of Ti-6A1-4Vcomponents processed by MIM [J]. Materials Science and Engineering A, 2010, 527: 1800-1805.
  • 3THIAN E S, LOH N H, KHOR K A, TOR S B. Ti-6A1-4V/HA composite feedstock for injection molding [J]. Materials Letters, 2002, 56: 522-532.
  • 4SCOTT W K, ERIC N, SIMMONS K. A new binder for powder injection molding titanium and other reactive metals [J]. Journal of Materials Processing Technology, 2006, 176: 205-209.
  • 5AROCKIASAMY A, RANDALL M G, HEANEY D F, WANG P T, HORSTEMEYER M F, KING R L, ADCOCK B. Effect of additives on sintering response of titanium by powder injection moulding [J]. Powder Metallurgy, 2011, 54: 420-426.
  • 6ERGUL E, GULSOY H 13, GUNAY V. Effect of sintering parameters on mechanical properties of injection moulded Ti-6AI-4V alloys [J]. Powder Metallurgy, 2009, 52:65-7 I.
  • 7GUO Shi-bo, QU Xuan-hui, XIANG Jun-huai, ZHANG Rong-fa, HE Xiaog-ming, LI Ming-sheng, DUO Shu-wang, LI Wen-kai. Effect of annealing processing on microstructure and properties of Ti-6A1-4V alloy by powder injection molding [J]. Transaction of Nonferrous Metals Society of China, 2006, 16:701-704.
  • 8MUTSUDDY B C. Injection molding research paves way to ceramic engine parts [J]. Ind Res Dev, 1983, 25: 76-80.
  • 9GERMAN R M, BOOKER E Powder injection molding [J]. Appl Meeh Rev, 1991, 44(8): 134-168.
  • 10HUANG Bai-yun, LIANG Shu-quan, QU Xuan-hui. The rheology of metal injection molding [J]. Journal of Materials Processing Technology, 2003, 137: 132-137.

同被引文献190

引证文献3

二级引证文献7

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部