李亚江
先进材料及特种焊接技术
个性化签名
- 姓名:李亚江
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学术头衔:
博士生导师
- 职称:-
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学科领域:
材料合成与加工工艺
- 研究兴趣:先进材料及特种焊接技术
李亚江,男,博士、教授、博士生导师。 1954年12月生,本科毕业于华南理工大学,博士研究生毕业于山东大学,现为山东大学材料科学与工程学院教授、博士生导师。从事先进材料及特种焊接技术的教学与科研工作。
主持完成国家自然科学基金、省(部)级科技发展项目、省自然科学基金、国家访问学者基金、国家重点实验室基金等十多项科研课题;近年来获国家教育部自然科学奖一等奖1项、省科学技术进步奖三等奖4项、省高校自然科学奖一等奖3项。获国家发明专利8项(均为第一发明人)并取得重大经济效益。所完成的博士论文获省优秀博士论文奖励。获山东大学优秀博士论文指导教师奖。
在国内外重要刊物上发表论文180多篇,其中有110多篇论文被SCI、EI收录并被美国、英国、日本、印度、乌克兰等国家的同行学者和专家多次引用。出版专著和译著10多部,主要有《特殊及难焊材料的焊接》、《焊接组织性能与质量控制》等。主编“十一五”重点规划教材《焊接冶金学-材料焊接性》和“十一.五”国家级规划教材《特种连接技术》。
指导博士生8人,硕士研究生14人。现为中国机械工程教育协会材料成形及控制学科教学委员会焊接分委员会副主任、国际核心刊英国Journal of Materials Processing Technology、美国Scripta Materials、印度Bulletin of Materials Science评审委员。
主要从事金属、非金属同种或异种新材料的焊接研究和开发。2007年和2001年在俄罗斯莫斯科鲍曼国立技术大学(Bauman Moscow State Technical University)和美国弗吉尼亚大学(University of Virginia)从事合作研究,与莫斯科鲍曼国立技术大学和美国弗吉尼亚大学建立了密切的国际合作关系。目前在研课题为:航空材料的焊接性研究、异种材料焊接工艺及接头区组织性能研究与产品开发,如Fe3Al金属间化合物焊接及数值分析、复合材料或新型陶瓷/钢的特种焊接研究,钛、铝、镁、铜等异种材料的焊接及接头区组织性能模拟,超高强异种钢的焊接等。
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702
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成果数
18
【期刊论文】XRD and SEM analysis near the diffusion bonding interface of Mg/Al dissimilar materials
李亚江, Yajiang Li a, Peng Liu b, Juan Wang b, Haijun Ma b
Vacuum 82(2008)15-19,-0001,():
-1年11月30日
The microstructure and phase constitution near the diffusion bonding interface of Mg/Al dissimilar materials are studied using a scanning electron microscope (SEM), X-ray diffraction (XRD) and transmission electron microscope (TEM). The test results indicated that an obvious diffusion zone was formed near the Mg/Al interface during the vacuum diffusion bonding. The diffusion transition zone near the interface consists of various MgxAly phases. The transition region on the Mg side mainly consists of Mg crystals, and the new phase formed was the Mg3Al2 phase having a face-centred cubic lattice. This is favorable for improving the combined strength of Mg substrate and diffusion transition zone.
Mg-Al dissimilar materials, Diffusion bonding, Microstructure, Phase structure
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【期刊论文】Microstructure performance on TIG welding zone of Fe3Al and 18-8 dissimilar materials
李亚江, Y. Li*, , S. A. Gerasimov, U. A. Puckov, H. Ma and J. Wang
Materials Reseqarch Innovations 2007 Vol.11 NO.3 133-136,-0001,():
-1年11月30日
Fe3Al intermetallic and 18-8 stainless steel were welded by means of tungsten inert gas (TIG) arc welding. The microstructure performance of the welding zone was analysed using a metalloscope and a scanning electron microscope. The test results indicated that microstructure of the welded metals consists of austenite, proeutectoid ferrite, acicular ferrite, carbide free bainite and lath martensite distributed on the austenitic boundaries as well as grains inside. The microhardness of the fusion zone was lower than that of Fe3Al base metal. The NiAl in the fusion zone was favourable to improve toughness and avoid the welding cracks.
Fe3Al,, Tungsten inertgas are welding,, Microstructure
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李亚江, , 王娟
材料科学与工艺,2004,2(1)45~48,-0001,():
-1年11月30日
研究了Fe3Al/18-8异种材料扩散焊中工艺参数对界面结合、接头变形状况和剪切强度的影响。采用金相显微镜和扫描电镜(SEM)分析了不同焊接工艺条件下Fe3Al/18-8异种材料扩散焊接头的显微组织特征。结果表明合适的扩散焊工艺参数为:加热温度1020~1040℃,保温时间45~60min,焊接压力12~15MPa.
Fe3Al金属间化合物, Fe3Al/, 18-8扩散焊接头, 工艺参数, 剪切强度
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【期刊论文】Finite element analysis of residual stress in the welded zone of a high strength steel
李亚江, LI YAJIANG*, WANG JUAN, CHEN MAOAI and SHEN XIAOQIN
Bull. Mater Sci., Vol. 27 No.2, April 2004, 101-106,-0001,():
-1年11月30日
The distribution of the residual stress in the weld joint of HQ130 grade high strength steel was investigated by means of finite element method (FEM) using ANSYS software. Welding was carried out using gas shielded arc welding with a heat input of 16 kJ/cm. The FEM analysis on the weld joint reveals that there is a stress gradient around the fusion zone of weld joint. The instantaneous residual stress on the weld surface goes up to 800~1000MPa and it is 500~600 MPa, below the weld. The stress gradient near the fusion zone is higher than any other location in the surrounding area. This is attributed as one of the significant reasons for the development of cold cracks at the fusion zone in the high strength steel. In order to avoid such welding cracks, the thermal stress in the weld joint has to be minimized by controlling the weld heat input.
High strength steel, gas shielded arc welding, residual stress, weld cracks.,
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【期刊论文】Fine structure in the inter-critical heat-affected zone of HQ130 super-high strength steel
李亚江, LI YAJIANG*†, WANG JUAN† and LIU PENG† *National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin , P.R.China †Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan , P.R.China
Bull. Mater. Sci., Vol. 26, No.5, February 2003, 101-106,-0001,():
-1年11月30日
High strength steel; heat-affected zone; M-A constituent; fine structure.
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李亚江, Yajiang LI†, Bing ZHQU, Tao FENG and Jiangwei REN
J. Mater, Sci, Technol., Vol.18 No.5, 2002, 1-4,-0001,():
-1年11月30日
Microstructure performance in the welding zone of T91 heat-resistant steel under the condition of TIG welding was researched by means of metallography, X-ray diffraction and scanning electron microscope (SEM). Experimental results indicated that microstructure of T91 weld metal was austenite + a little amount of 5 ferrite when using TGS-9cb filler wire. Substructure inside the austenite grain was crypto-crystal lath martensite, on which some Cr23C6 blocky carbides were distributed. The maximum hardness (HRC44) in the welding zone is near the fusion zone. There existed no obvious softening zone in the heat-affected zone (HAZ). For T91 steel tube of φ63 mmx5mm, when increasing welding heat input (E) from 4.8kJ/cm to 12.5kJ/cm, fracture morphology in the fusion zone and the HAZ changed from dimple fracture into quasi-cleavage fracture (QC). Controlling the welding heat input of about 9.8kJ/cm is suitable in the welding of T91 heat-resistant steel.
T91 heat-resistant steel,, Welding,, Microstructure
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【期刊论文】Fine structures in Fe3Al alloy layer of a new hot dip aluminized steel
李亚江, LI YAJIANG*, X HOLLY† and ZHANG YONGLAN
Bull. Mater. Sci. Vol. 25, No.7, December 2002, 101-105,-0001,():
-1年11月30日
The fine structure in the Fe-Al alloy layer of a new hot dip aluminized steel (HDA) was examined by means of X-ray diffractometry (XRD), electron diffraction technique, etc. The test results indicated that the Fe-Al alloy layer of the new aluminized steel mainly composed of Fe3Al, FeAl and a-Fe (Al) solid solution. There was no brittle phase containing higher aluminum content, such as FeAl3 (59
Surface alloying, iron aluminides, electron diffraction, X-ray diffraction (, XRD), .,
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李亚江, LI YAJIANG*, ZHANG YONGLAN, SUN BIN and FENG TAO
Bull. Mater. Sci. Vol. 25, No.5, September 2002, 101-106,-0001,():
-1年11月30日
Microstructure, precipitates and fracture morphology in the coarse grained heat-affected zone (CGHAZ) of a new high-purity 0Cr18Mo-Ti ferritic stainless steel were studied by means of optical metallography, SEM, TEM, X-ray diffractometer, etc. Experimental results indicated that grain coarsening resulted in brittle fracture in the CGHAZ of 0Cr18Mo-Ti steel. The reduction of impact toughness in the CGHAZ due to change of cooling rate can be attributed to the increase of nitrides (TiN, Cr-N, etc). These nitrides in the CGHAZ promote initiation and propagation of brittle cracks. The precipitated Cr2N nitrides in the grain boundaries decrease impact toughness in the CGHAZ of 0Cr18Mo-Ti steel by promoting crack initiation. In practical applications, the welding heat input (E) should be as low as possible to prevent toughness reduction in the CGHAZ.
Ferritic stainless steel, electron microscopy, microstructure, fracture, heat-affected zone.,
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【期刊论文】Finite element modeling of hydrogen diffusion in fusion zone of HQ130 high strength steel
李亚江, Li Yajiang a, b, *, Wang Juan b, Feng Jicai a, Shen Xiaoqin b
Journal of Materials Processing Technology 161(2005)423-429,-0001,():
-1年11月30日
The distribution of hydrogen in the welding zone of HQ130 high strength steel is calculated by using finite element method (FEM). The finite element program of hydrogen in the welding zone is worked out. In the program, the effects of welding heat input (q/v), temperature and surface-escaping coefficient of hydrogen, etc., are taken into account. Crack morphology in the fusion zone and effect of diffusion hydrogen on cracks are analyzed. Cracks originated in the partially melted zone at about 20-60m from the melting interface line and propagated parallel to the fusion zone or turned into the weld metal. Hydrogen accumulates seriously near the fusion zone, particularly at the root fusion zone. This is one of the importance reasons for the forming of cracks in this zone. The test results and analysis indicate that welding heat input should be controlled about q/v=16.0kJ/cm to prevent cracks being produced and propagated for HQ130 steel.
High strength steel, Welding, Heat affected zone, Finite element method, Computer simulation
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【期刊论文】A study on microstructure in the brazing interface of WC-TiC-Co hard alloys
李亚江, Li Yajiang a, *, Zou Zengda a, Holly Xiao b, Feng Tao a, Wang Xinghong a
International Journal of Refractory Metals & Hard Materials xxx(2001)xxx-xxx,-0001,():
-1年11月30日
The brazing parameters and microstructure in the interface of WC-TiC-Co hard alloy and the brazing filler were investigated by means of inside-furnace brazing, scanning electron microscopy (SEM) and X-ray diffraction. Test results indicated that the brazing joint with which the interface combines excellently can be obtained by using Cu-Zn-Ni brazing filler alloy and controlling the heating temperature 940-960℃, the heat preservation time 10-15min and a suitable cooling. The crystal microstructure of the brazing filler alloy is α+β eutectic. The interface microstructure of the hard alloy and the brazing filler alloy distribute evenly. The interface zone consists of WC, TiC, CuZn (s-phase). There are no microcracks, inclusions, etc. nearby the interface. The interface zone is formed by mutual diffusion of the hard alloy and the brazing filler alloy under high temperature.
Hard alloy, Brazing, Interface, Microstructure
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