杨庆祥
大型铸锻件材料组织、力学性能及数值模拟。
个性化签名
- 姓名:杨庆祥
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
材料科学
- 研究兴趣:大型铸锻件材料组织、力学性能及数值模拟。
杨庆祥教授现为燕山大学材料科学与工程学院副院长、博士生导师、《中国稀土学报》中英文版编委、中国金属学会材料科学分会理事。
杨庆祥教授主要研究方向为大型铸锻件材料组织、力学性能及数值模拟。先后主持和参加了国家“863”计划、国家自然科学基金、国家重大攻关项目、中国博士后基金、教育部留学人员基金、人事部留学人员基金、河北自然科学基金、河北省攻关项目等纵向课题,同时,还与多家企业合作,解决技术难题,为企业创造了重大经济效益。
杨庆祥教授在国内外著名刊物上发表学术论文100多篇,被SCI收录36篇,EI收录52篇。荣获河北省科技进步一等奖、二等奖和三等奖各1项;成果签定5项,其中4项达到国际先进水平,1项产品为国际首创;申报国家发明专利5项,已授权1项。杨庆祥教授还主持了教育部教学改革项目1项、河北省新世纪高等教育教学改革工程项目1项。主编了普通高等教育“十一五”国家级规划教材1部。
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成果数
6
杨庆祥, Qingxiang Yang a, ∗, Xuejun Ren b, Yukui Gao c, Yanli Li a, Yanhui Zhao a, Mei Yao a
Materials Science and Engineering A 392(2005)240-247,-0001,():
-1年11月30日
In this work, specimens with dimensions of
Numerical simulation, Stress field, Carburization, Steel 20CrMnTi, Martensitic transformation
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【期刊论文】Cutting temperatures in hard turning chromium hardfacings with PCBN tooling
杨庆祥, X.J. Ren a, ∗, Q.X. Yang b, R.D. James c, L. Wang d
Journal of Materials Processing Technology 147(2004)38-44,-0001,():
-1年11月30日
Hard turning of high chromium hardfacing materials is a newapplication field for PCBN tools. An investigation of the cutting temperature is essential in understanding the machining mechanism of the material, thus to improve the process efficiency. In thiswork, cutting temperatures of two typical hardfacing materials were studied using a mixed experimental and numerical approach-remote thermocouple technique and finite element(FE) simulation. The effect of microstructure and machining parameters on the cutting temperatures were comparatively investigated using titanium alloy as a reference material. The average cutting temperatures of the hardfacings were found to be ranged from 600 to 700℃ and increased with higher cutting speed and feedrate. A hardfacing with larger carbide grains showed lower cutting temperatures and exhibited lower increase rate with cutting speed and feedrate.
Cutting temperature, Hardfacing, Remote thermocouple, Finite element analysis, PCBN, Hard turning
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杨庆祥, Qing Xiang Yang a, ∗, Mei Yao a, Joongkeun Park b
Materials Science and Engineering A364(2004)244-248,-0001,():
-1年11月30日
FEM models are established for calculations of the temperature fields during cooling and the internal stress field of a medium-high carbon steel specimen after hard-face-welding(hardfacing) by using an electrode with lower carbon content. The martensite transformations in both welded metal and matrix are considered in the model for calculation of the internal stress field. The validity of these models was verified by the experimental results of temperature field, as well as the residual(internal) stress field, determined at the surface of the specimen.Based on the calculated results, the effect of martensite transformation points on the residual stress fields is analyzed.
Numerical simulation, Residual stress, Hard-facing metal, Martensitic transformation, Medium-high carbon steel
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杨庆祥, Q.-X. Yang a, *, M. Yao a, J.-K. Park b
Computational Materials Science 29(2004)37-42,-0001,():
-1年11月30日
The temperature field and residual stress field of medium-high carbon steel during following cooling after hard-facewelding(hardfacing) were measured by a thermo-vision analyzer and a X-ray stress analyzer separately. By using the experimental data and the thermo-physical, mechanical parameters of materials, the temperature and stress fields model of FEM were established. According to this model, the stress of medium-high carbon steel during cooling after hardfacing was analyzed in this paper. The results show that the calculated temperature and residual stress fields fit the measured ones very well and it is good enough to simulate the stress during cooling after hardfacing in different regions of the specimen. When the martensite transformation occurs at the HAZ and hardfacing metal, the compressive stress appears at the surface of the specimen. With the further decreasing of temperature, the tensile stress appears in this region and it increases gradually.
Numerical simulation, Medium-high carbon steel, Hardfacing, Stress field
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杨庆祥, 赵言辉, 许志强, 姚枚, 高玉魁, 王仁智
机械工程学报,2001,40(7):34~40,-0001,():
-1年11月30日
跳出学科分工的局限性,对以齿轮为例的表面强化零件的表象疲劳极限进行综合分析。采用20CrMnTi钢制备三点弯曲小试样及齿轮试样。试样都经过同样的渗碳(并淬火及低温回火)处理,其中一半试样再经过表面喷丸强化。为了对比,还有一组小试样经过伪渗碳处理。测定了小试样表面的残余压力场。利用升降确定了5X106周、应力比0.05条件下小试样和齿轮试样轮齿的弯曲疲劳极限载荷,并对各组试验中疲劳寿命最长的断口进行分析及“表面和内部疲劳极限”的概念对试验结果进行定量分析,并探讨根据小试样疲劳极限确定复杂零件(如齿轮)疲劳极限载荷的方法,以及表面强化工艺优化的问题。
力学行为模型化, 疲劳极限, 渗碳, 喷丸, 残余应力场
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杨庆祥, 杨庆祥*, 姚枚
中国稀士学报,2003,21(6):686~690,-0001,():
-1年11月30日
采用红外热像仪和X 射线应力仪分别测定了采用含稀土氧化物的堆焊焊条,对中高碳钢试件进行堆焊过程的温度场和残余应力场,根据实验数据和材料的物理、力学参数,采用二维有限元计算方法,建立了堆焊应力场模型,根据这一模型,分析了马氏体相变对堆焊金属残余应力场的影响。结果表明:焊条药皮中添加稀土氧化物和金属镍可以降低马氏体相变温度,而降低马氏体相变温度可以降低堆焊金属表面的残余拉应力,从而提高了堆焊金属的抗开裂性能。
金属材料, 马氏体相变, 中高碳钢, 堆焊金属, 残余应力分布, 数值模拟, 稀土氧化物
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