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| 1 | New Developed Welding Electrode for Improving the Fatigue Strength of Welded Joints显示文摘A new welding electrode, low transformation temperatur e electrode (LTTE), was introduced in this paper. It was described in design principle, mechanics, chemical compositions of their deposited metal and manufacturing methods.It was proved that the best transformation starting temperature from austenite to martensite of the deposited metal of LTTE was at about 191℃ and it was obtained by adding alloying elements such as Cr, Ni, Mn and Mo. The microstructure of the weld metal of the LTTE was low carbon martensite and residual austenite. The compressive residual stress was induced around the weld of the LTTE and the -145 MPa in compression could be obtained in middle of weld metal. The fatigue tests showed that the fatigue strength of the longitudinal welded joints welded with the LTTE at 2×106 cycles was improved by 59% compared with that of the same type of welded joints welded with conventional E5015 and the fatigue life was increased by 47 times at 162 MPa. It is a very valuable method to improve the fatigue performance of welded joints. | Wenxian WANG, Lixing HUO, Yufeng ZHANG, Dongpo WANG and Hongyang JINGCollege of Material Science and Engineering, Tianjin University, Tianjin 300072, China | 2002 | Journal of Materials Science & Technology2002，18，6： | 3 |
| 2 | Evaluation on Fracture Toughness at Dynamic Loading for Welded Joint Based on the Local Approach显示文摘The changes in mechanical properties and fracture toughness by dynamic loading were investigated with experiments.The parameter R, which can reflect the effect of the loading rate and the temperature rising during the high loading rate, could be employed to describe the constituent relation for the typical structure steel and its weld metal. The dynamic loading effect on the stress/strain fields and the temperature variation in the vicinity of the crack tip was analyzed by the finite element method, the dynamic fracture behavior was evaluated based on the local approach. It has been found that the Weibull stress is an effective fracture parameter, independent of the temperature and the loading rate. | Hongyang JING, Lianyong XU, Lixing HUO and Yufeng ZHANGSchool of Materials Science and Engineering, Tianjin University, Tianjin 300072, China | 2004 | Journal of Materials Science & Technology2004，20，1： | 2 |
| 3 | Study on the Basic Mechanical Behaviors of High Density Polyethylene Electrofusion Welded Joints at Different Temperature显示文摘The basic mechanical behaviors of high density polyethylene electrofusion welded joint at different temperatures were studied by using differently designed specimens in this paper. The results show that the strength of weld bonding plane is higher than that of the pipe and socket materials at room temperature. In order to get the shear strength of electrofusion welded joint,the effective bond lengths were reduced by cutting artificial groove through the socket. The effective bonding length of welded joint to get the shear strength is decreased with decreasing testing temperature. The shear strength and the sensibility to sharp notch of HDPE material increased with decreasing temperature. | Lixing HUO, Fangjuan QI, Yufeng ZHANG, Hongyang JING and Xinqi YANGSchool of Materials Science and Engineering, Tianjin University, Tianjin 300072, China | 2003 | Journal of Materials Science & Technology2003，19，6： | 2 |
| 4 | Young's modulus and stress intensity factor determination of high velocity electric arc sprayed metal-based ceramic coatings显示文摘 | Xu Lianyong Jing Hongyang Huo Lixing | 2006 | Surf Coat Techn2006，201，6： | 1 |
| 5 | Investigation of thefatigue behaviors of the welded joints treated by TIG dressing andultrasonic peening under variable-amplitude load显示文摘 | Huo Lixing Wang Dongpo Zhang Yufeng | 2005 | InternationalJournal of Fatigue2005，，27： | 1 |
| 6 | Analysis of the S – N curves of welded joints enhanced by ultrasonic peening treatment显示文摘 | Xiaohui Zhao Dongpo Wang Lixing Huo | 2010 | Materials and Design2010，，1： | 1 |
| 7 | Investig -ation of the fatigue behaviour of the welded joints treated by TIG dressing and ultrasonic peening under variable-amplitude load 显示文摘 | Lixing Huo Dongpo Wang Yufeng Zhang | 2005 | International Journal of Fatigue2005，，95： | 1 |
| 8 | Investigation on improving fatigue properties of welded joints by ultrasonic peening method显示文摘 | HUO Lixing WANG Dongpo ZHANG Yufeng | 2001 | Welding in the World2001，45，34： | 1 |
| 9 | Investigation on improving fatigue properties of welded joints by ultrasonic peening method 显示文摘 | Wang Dongpo Zhang Yufeng | 2001 | Welding in the World2001，45，34： | 1 |
| 10 | Ultrasonic peening and low transformation temperature electrodes used for improving the fatigue strength of welded joints显示文摘 | HUO Lixing WANG Dongpo WANG Wenxian | 2004 | Welding in the World2004，48，34： | 1 |
| 11 | Investigation on improving fatigue properties of welded joints by ultrasonic peening method 显示文摘 | Huo Lixing Wang Dongpo Zhang Yufeng | 2002 | Welding Research Abroad2002，48，1： | 1 |
| 12 | Ultrasonic peening and low transformation temperature electrodes used for improving the fatigue strength of welded joints 显示文摘 | Huo Lixing Wang Dongpo Wang Wenxian | 2004 | Welding in the World2004，48，34： | 1 |
| 13 | Investigation of the fatigue behaviour of the welded joints treated by TIG dressing and ultrasonic peening under variable-amplitude load 显示文摘 | Huo Lixing Wang Dongpo Zhang Yufeng | 2005 | International Journal of Fatigue2005，27，1： | 1 |
| 14 | Investigation on improving fatigue properties of welded joints by ultrasonic peening method显示文摘 | Huo Lixing Wang Dongpo Zhang Yufen | 2001 | Welding in the World2001，45，34： | 1 |
| 15 | Hot spot stress fatigue evaluation to duplex stainless steel welded joints显示文摘 | JIA Fayong HUO Lixing CHEN Gang | 2006 | Key Engineering Materials2006，，： | 1 |
| 16 | Investigation on improving fatigue properties of welded joints by ultrasonic peening method显示文摘 | Huo Lixing Wang Dongpo Zhang Yufeng | 2002 | Welding Research Abroad2002，48，1： | 1 |
| 17 | Analysis of the S-N curves of Welded joints enhanced by ultrasonic peening treatment显示文摘 | Xiaohui Zhao Dongpo Wang Lixing Huo | 2011 | Materials and Design2011，32，1： | 1 |
| 18 | Ultrasonic peening and low transformation temperature electrodes used for improving the fatigue strength of welded joints显示文摘 | Huo Lixing Wang Dongpo Wang Wenxian | 2004 | Welding in the World2004，48，34： | 1 |
| 19 | Application of the local approach to the fatigue assessment for welded joints显示文摘 | Wang Dongpo Zhang Yufeng Huo Lixing | 2004 | Welding Research Abroad2004，50，11： | 1 |
| 20 | Investigation of the fatigue behaviour of the welded joints treated by TIG dressing and ultrasonic peening under variable-amplitude load显示文摘 | Huo Lixing Wang Dongpo Zhang Yufeng | 2005 | International Journal of Fatigue2005，27，1： | 1 |
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