机构

• 金属研究所 [2]
• 长春光学精密机械与物... [2]

采集方式

• OAI收割 [4]

内容类型

• 会议论文 [2]
• 期刊论文 [2]

发表日期

• 2013 [1]
• 2011 [1]
• 2006 [1]
• 2005 [1]

学科主题

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Achieving Large-area Bulk Ultrafine Grained Cu via Submerged Multiple-pass Friction Stir Processing 期刊论文  OAI收割 Journal of Materials Science & Technology, 2013, 卷号: 29, 期号: 12, 页码: 1111-1115 P. Xue; B. L. Xiao; Z. Y. Ma 收藏  |  浏览/下载：36/0  |  提交时间：2014/02/19 Friction stir processing  Multiple-pass  Ultrafine grains  Microstructure  Mechanical properties  low-carbon steel  mechanical-properties  plastic-deformation  alloy  microstructure  ductility  strength  metals  nanocrystalline  boundaries   Study on infrared transparent radar double band-pass filter (EI CONFERENCE) 会议论文  OAI收割 2011 International Conference on Mechatronics and Materials Processing, ICMMP 2011, November 18, 2011 - November 20, 2011, Guangzhou, China Jia H. Y.; Feng X. G. 收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25 To realize the functions of infrared transparent as well as radar double- pass Band  A Y loop and Y slot compound element Frequency Selective Surface (FSS) structure is proposed  which takes an infrared transparent inductive mesh as a substrate. The proposed structure is analyzed based on Galerkin spectral method. The transitivity of infrared (3um-5um) as well as the radar double passed band with two resonance frequencies (31GHz and 54GHz) is discussed. The result reveals that this structure has function of infrared transparent as well as stable radar double-band filter with effective shielding effect on S-band and C-band radar electromagnetic waves. The design with multiple passband is suitable for radar/IR composite guidance and it also offers a kind of new thinking way of design for multi-mode compound guidance systems. 2011 Trans Tech Publications.   Effect of multiple-pass friction stir processing on microstructure and tensile properties of a cast aluminum-silicon alloy 期刊论文  OAI收割 Scripta Materialia, 2006, 卷号: 54, 期号: 9, 页码: 1623-1626 Z. Y. Ma; S. R. Sharma; R. S. Mishra 收藏  |  浏览/下载：12/0  |  提交时间：2012/04/14 friction stir processing  cast A356  overlapping passes  multiple-pass  aluminum alloy  superplasticity  a356  behavior   Spontaneous emission and gain characteristics of InGaAs/InGaAsP quantum well laser (EI CONFERENCE) 会议论文  OAI收割 Optoelectronic Devices and Integration, November 8, 2004 - November 11, 2004, Beijing, China 作者:  Wang L.;  Wang L.;  Wang L. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 Long wavelength InGaAs/InGaAsP multiple quantum well laser is grown by MOCVD. The characteristics of spontaneous emission  amplified spontaneous emission and modal gain of the MQW is investigated by using single-pass multi-section technique. The amplified spontaneous emission is around a wavelength of 1500nm  dependent on the temperature and the current density. The modal gain spectra show a red shift with increasing temperature. The peak modal gain exhibits a decrease with increasing temperature from 140K to 300K. The loss measurements shows that the main loss mechanism in the structure might be the free carrier absorption in the doped cladding layers and a internal modal loss of about 10cm-1.