黄泽文
高性能结构材料,特别是高温结构材料
个性化签名
- 姓名:黄泽文
- 目前身份:
- 担任导师情况:
- 学位:
-
学术头衔:
博士生导师
- 职称:-
-
学科领域:
材料合成与加工工艺
- 研究兴趣:高性能结构材料,特别是高温结构材料
材料科学与工程学科、专业教授、博士生导师。1982年在西南交通大学材料系获工学硕士,后留校任讲师。1987年赴英国伯明翰大学留学,1991 年获该校冶金材料系博士学位。1991-1994年到诺丁汉大学材料工程及设计系做博士后,于2001秋天回国,应聘到西南交通大学材料科学和工程学院担任教授。黄泽文教授在1987-1990年间师从R.E.Smallman 和.H. Loretto 教授, 在 Al-Li合金领域从事研究工作。从1991年起从事金属基复合材料在高速机械上的开发和应用工作,工作涉及用金属基复合材料设计和制造纺织机织梭,传动齿轮,传动带轮等零件。从1994年起,在伯明翰大学高性能材料研究中心从事对TiAl合金和高温Ti合金的研究,任该中心研究员,高级研究员。工作涉及用热等静压炉的工艺开发,机械零件的表面性能设计及显微结构评估等。迄今在国际一流刊物和国际学术会议上已发表论文50余篇。黄泽文教授在高性能结构材料,特别是高温结构材料的研究上成绩突出,曾多次参加过 International Symposium of Structural Intermetallics (ISSI) 系列会议TMS系列年会中 Structural Intermetallics 的会议。现已在此领域发表学术论文近30篇。他提出了Ti-Al合金中合金元素、处理工艺对析出相形成和对材料强度、塑性、疲劳性能的影响关系,对发展高性能、轻型航空结构材料起到了积极的促进作用。2001年回国受聘西南交通大学教授,提出进行TiAl合金研究,同年获得国家自然科学主任基金资助。并连续两年获得国家自然科学基金资助。
-
主页访问
2811
-
关注数
0
-
成果阅读
558
-
成果数
10
黄泽文, X.Y. Yang *, Z.W. Huang, Y.K. Wu, H.Q. Ye
Materials Science and Engineering A300(2001)278-283,-0001,():
-1年11月30日
The synthesis of nano-sized SiC through ball milling (BM) of elemental Si and graphite mixed powders at room temperature has been reported, and detailed reaction process has been characterized by high-resolution electron microscopy (HREM). High-resolution electron microscopy (HREM) observations presented herein suggest that amorphous graphite (a-graphite), amorphous silicon (a-Si) and nano-sized crystalline Si (c-Si) with many defects are produced during BM, which is prerequisite to the reaction. In some areas, SiC is synthesized through a diffusion of C atoms into the a-Si:and c-Si. In the former, a-Si(C) forms, and then mechanically-driven crystallization of the a-Si(C) occurs to form SiC. In the latter, C atoms directly replace Si atoms to form SiC with an orientation relationship of (111)SiC::(111)Si. In other areas, localized self-sustained reaction occurs to form slightly larger SiC grains.
Si-C system, Ball milling, High-resolution electronic microscopy
-
48浏览
-
0点赞
-
0收藏
-
0分享
-
221下载
-
0评论
-
引用
【期刊论文】Stress intensity factors for a surface crack in a tublar T-jonint
黄泽文, S.P. Chiew, S.T.Lie*, C.K. Lee, Z.W. Huang
International Journal of Pressure Vessels and Piping 78(2001)667-685,-0001,():
-1年11月30日
This paer describes a systemaic modelling of a general craced tubular Y-joint comoly found in offshore structures. The Y-jonit under consideration amya contain either a throguph-thicknes or surface crack which can be of any length and locatey at any position along the bracechord intersection. This is particularly significant, as if thas always been found in proactice that the initiation site of a surface crack does not always start from the saddle or rown position when tubular joints are subjected to a complex loading conditin. the geometrical model developed in the work described in this paper includes the weld detail which is compatible with the American Welding Society (AWS) standared [1]. Based on this geometry, well-graded finited dlement (FE) meshes were generated for a T-joint, which is a specific type of Y-Joint, to obtain the stress intensity factors (SIFs) for a surface semi-elliptical crack aling the crack tip using quarter-point elements. The numerical analysis indicated that the FE models generated are appropriate to the geometry of the joints since converging values of SIF were obtained as the meshes used were refined. Theaccuracy of the Mode, I, Mode II and Mode III SIFs demonstrateds that the propsed model is reliable.
Finite element mesh: Stress intensity factor, Surface crack, Through-thickness crack, Tublar Y-joint
-
54浏览
-
0点赞
-
0收藏
-
0分享
-
777下载
-
0评论
-
引用
黄泽文
,-0001,():
-1年11月30日
基于对金属基复合栈料的分析,指出这种高性能材料特别适用于汽车、飞机工业和多种高速机械以保证新一代机械的低能耗、长寿命、高精度和良好的环境行为。着重指出保证金属基复合材料在民用工业的广泛应用的关键是促进其大规模生产和商品化发展,注重产品的二次加工工艺和零件的设计方法及降低成本。
金属基复合材料,, 碳化硅颗料,, 工业发展战略,, 商品化发展
-
65浏览
-
0点赞
-
0收藏
-
0分享
-
246下载
-
0评论
-
引用
【期刊论文】Notched behaviour of a silicon carbide particulate reinforced aluminum alloy matrix composite
黄泽文, Ze Wen Huang, Ian R. Mccoll*, Samuel J. Harris
Materials Science and Engineering A215(1996)67-72,-0001,():
-1年11月30日
The notched fatigue behaviour of a fine particulte reinfored Al-Cu-Mg (2124) matriz composite is compared with that of an equivalent monolithic alloy (2024), both in the T4 condition. The difference in response of the materials for tensile and fatigue loading is pronounced. Under tensile loading the composite exhibits'notch weakening' and an almost brittle fracture, wihile the monolithic allyoy shows a degree of 'ontch strengthening'. In contrast, under fatigue loading the compositee exhibits a much smaller noth sensitvity than that of monlithic alloy. At 107 cycles the fatigue notch sensityivity facotr is reduced by ≈6.5. The notched tensile behaviour of the composite is interpreted in terms of its reduced ductility and susceptibillity to acavitation. Conventional notch theory is able to account for the notch sensitivity of the monolithic alloy in fatigue, but not composite.
Sillicon carbide, Aluminium alloy, Notched behaviour
-
85浏览
-
0点赞
-
0收藏
-
0分享
-
150下载
-
0评论
-
引用
【期刊论文】CRYSTALLOGRAPHIC FEATURES OF INTRALAMELLAR FRACTURE IN A FULLY LAMELLAR TiAl BASED ALLOY
黄泽文, Z.W. Huang, P.Bowen, S. Davey and P.A. Blenkinsop
Scripta Materinalina. Vol. 38. No.7. pp 1117-1123, 1998,-0001,():
-1年11月30日
From fatigue fracture surface examination on fully lamellar micrustructure of γ-TiAl alloys, intralamellar crack propagation has been reported recently [1,20]. Compared with the investigation oftranslamellar andinterlamellar fractures, the characteristic features of intralamellar fatigue fracture have not been investigated in detail. Intralamellar crack propagation on the fatigue fracture surface is found same as interlamellar propagation, parallel to lamellar interaces but is characterised by complicated geometric patternas of microcracking traces on consecutive lamellar plates, while translamellar propagation occurs transverse to the lamellar boundaries. These geometric patternas may rlate to deformation traces occurring in areas local to the growing crack tip. An investigation into intralamellar fracture to explain its crystallographic features is merited. In this paper attention will be concentrated on fully lamellar microstructure subjected to cyclic loading sinee this condition demonstrates a considerable amount of intralamellar fatigue fracture and can achieve improved crack growth resistance relavtive to near lamellar and duplex microstructures [3].
-
108浏览
-
0点赞
-
0收藏
-
0分享
-
128下载
-
0评论
-
引用
黄泽文, Z.W. HUANG† and P. BOWEN
Acta mater. Vol. 47, No.11, pp. 3189-3203, 1999,-0001,():
-1年11月30日
Large numbers of fine parallel steps are generated on translamellar fracture surfaces during slow crack growth (da/dNR5.0
Powder processing, Transmission electron microscopy (, TEM), , Intermetallic, Fatigue, Plastic deformation
-
38浏览
-
0点赞
-
0收藏
-
0分享
-
85下载
-
0评论
-
引用
【期刊论文】The effects of long-term air exposure on the stability of lamellar TiAl alloys
黄泽文, Z.W. Huang a, *, W. Voice b, P. Bowen a
Intermetallics 8(2000)417-426,-0001,():
-1年11月30日
s studied at 700℃ in air. Both α2 and γ lamellae were altered markedly after 1000-and 3000-h exposure. Three types of decomposition were found: (a) parallel decomposition of coarse α2 into bunches of very fine α2+γ lamellae, (b) perpendicular decomposition of fine γ(orγ+α2) lamellae into short-ranged γ domains or (γ+α2) grains and (c) perpendicular decomposition of fine α2 lamellae into short-ranged α2/γ grains. All three types are still at an intermediate stage after 3000-h xposure and neither break-up of lamellae nor globularisation of segments was observed. The thermal stability of microstructural constituents in increasing order was found to be: thick α2, thin α2, thin γ, and thick γlamellae. Tensile properties were aected by these changes and the extent was found to vary from alloy to alloy.
A., Titanium aluminides,, based on TiAl, B., Phase transformations, B., Mechanical properties at ambient temperature, D., Microstructure
-
38浏览
-
0点赞
-
0收藏
-
0分享
-
87下载
-
0评论
-
引用
黄泽文, Z.W. Huang* and P. Bowen
Scripta Materialia 45(2001)931-937,-0001,():
-1年11月30日
This paper reports a detailed electron microscope study of slip occurring at thefatigue crack tips for an intermaetallic fully lamellar TiAl alloy. The formation mechanismof the slip bands, theirnature and constitution and the relationshi between the slip bands asnd microcracking have been suggested.
TiAl alloy, Intermetallic, Fatigue, Shear bands, Transmission electron microsopy
-
37浏览
-
0点赞
-
0收藏
-
0分享
-
74下载
-
0评论
-
引用
【期刊论文】Thermal stability of Ti-46Al-5Nb-1W alloy
黄泽文, Z.W. Huang a, *, W.E. Voice b, P. Bowen a
Materials Science and Engineering A329-331(2002)435-445,-0001,():
-1年11月30日
The TiAl-based alloy Ti-46Al-5Nb-1W has been exposed at the temperature of 700℃ for up to 5000 h in air. The decomposition processes of all major phases in this alloy: γ, α2, βand ω, have been investigated in detail by transmission electron microscopy and have been correlated with tensile properties. It is found that considerable amounts of β phase are retained in the as-cast ingot condition and these readily decompose into the ω phase. As the exposure in air proceeds, along with the coarsening of ω particles, a reverse transformation from ω to β can occur at 700℃. During exposure, α2 lamellae begin to decompose significantly after 3000 and 5000h exposures. Some break up into small sized α2+γ grains through a 'perpendicular decomposition' mode, whilst γ lamellae remains essentially unchanged. Up to 5000-h exposure times do not produce any significant changes in proof stress and tensile strength in this alloy. A marginal decrease in tensile ductility measured at room temperature is, however, suggested.
Titanium aluminides based on TiAl, Casting, Thermal properties, Phase transformations, Electron microscopy transmission
-
58浏览
-
0点赞
-
0收藏
-
0分享
-
67下载
-
0评论
-
引用
黄泽文, Z.W. Huang a, *, W. Voice b, P. Bowen a
Scripta Materialia 48(2003)79-84,-0001,():
-1年11月30日
As-HIPped Ti-44Al-8Nb-1B was exposed to 700℃ air for up to 3000 h. It has been found that the β phase removed by hot isostatic pressing (HIPping) reforms as ordered B2 with ω phase during parallel decomposition of α2 lamellae to α2+γ lamellae and perpendicular decomposition of single α2 laths into α2 short sections, causing phase transformations of α2+γ→ B2(ω) and α2→B2(ω).
TiAl alloy, Stability, Phase transformations, Transmission electron microscopy
-
27浏览
-
0点赞
-
0收藏
-
0分享
-
59下载
-
0评论
-
引用