Effects of Solution Temperature on Microstructure and Ultrasonic Properties of GH4169
-
摘要: 对不同固溶温度的GH4169合金试样，进行了微观组织形貌观察，提取了晶粒尺寸、形状特征参数。采用纵波回波法和共线穿透法进行超声检测和非线性超声检测，计算合金的超声特性参数。提取的超声特性参数包括：衰减系数、声速、相对非线性系数、背散射信号（位于一次底波和二次底波之间）经验模态分解后固有模态函数的平均功率和波形指数。超声-微观结构参数对比分析的结果表明，通过衰减系数、声速、非线性系数可有效识别相变，衰减系数对晶粒尺寸波动敏感，随晶粒粗化而增大；所提取的固有模态函数平均功率和波形维数都可以对晶粒尺寸进行评价，但尚难以用于表征晶粒纵横比。Abstract: In this work the effects of solution temperature on microstructure and ultrasonic response of nickel-based super alloy GH4169 were examined. Characteristic parameters of grain size and shape were measured. Longitudinal wave echo method and collinear penetration method were used to test the samples, and the ultrasonic parameters, such as velocity, attenuation coefficient, and relative nonlinear coefficient, were calculated. The power and waveform index of intrinsic mode functions (IMFs) of backscattered signals dealt with empirical mode decomposition were calculated. Comparison between ultrasonic and microstructure data shows that the attenuation coefficient, velocity, and nonlinear coefficient could be used to make an effective identification of phase transition. The attenuation coefficient increased with the increase of grain size and was strongly sensitive to the change of grain size. Both power and waveform index of IMFs of backscattered signals could be used to estimate grain size, but they were difficult to characterize the axial ratio of grain.
-
-
[1] 师昌绪,仲增墉. 我国高温合金的发展与创新[J]. 金属学报, 2010, 46(11):1281-1288. [2] TOOZANDEHJANI M, MATORI K A, OSTOVAN F, et al. On the correlation between microstructural evolution and ultrasonic properties:a review[J]. Journal of Materials Science, 2015, 50(7):2643-2665.
[3] VIJAYALAKSHMI K, MUTHUPANDI V, JAYACHITRA. Influence of heat treatment on the microstructure, ultrasonic attenuation and hardness of SAF 2205 duplex stainless steel[J]. Materials Science & Engineering A, 2011, 529(1):447-451.
[4] ÖZKAN V, I·SMAIL H S, EROL A, et al. Influence of mean grain size with ultrasonic velocity on microhardness of B4C-Fe-Ni composite[J]. Journal of Alloys & Compounds, 2013, 574(3):512-519.
[5] ÖZKAN V, SARPVN Í H. Examining with the sintered temperature of mean grain size of B4C-Al-Ni composites by ultrasonic techniques[J]. Acta Physica Polonica A, 2012, 121(1):184-186.
[6] AGHAIE-KHAFRI M, HONARVAR F, ZANGANEH S. Characterization of grain size and yield strength in AISI 301 stainless steel using ultrasonic attenuation measurements[J]. Journal of Nondestructive Evaluation, 2012, 31(3):191-196.
[7] VIJAYALAKSHMI K, MUTHUPANDI V, JAYACHITRA R. Influence of heat treatment on the microstructure, ultrasonic attenuation and hardness of SAF 2205 duplex stainless steel[J]. Materials Science and Engineering A, 2011, 529(1):447-451.
[8] RUIZ A, ORTIZ N, MEDINA A, et al. Application of ultrasonic methods for early detection of thermal damage in 2205 duplex stainless steel[J]. Ndt & E International, 2013, 54(3):19-26.
[9] FREITAS V L D A, ALBUQUERQUE V H C D, SILVA E D M, et al. Nondestructive characterization of microstructures and determination of elastic properties in plain carbon steel using ultrasonic measurements[J]. Materials Science & Engineering A, 2010, 527(16):4431-4437.
[10] ALBUQUERQUE V H C D, SILVA E D M, LEITE J P, et al. Spinodal decomposition mechanism study on the duplex stainless steel UNS S31803 using ultrasonic speed measurements[J]. Materials & Design, 2010, 31(4):2147-2150.
[11] SILVA E D M, ALBUQUERQUE V H C D, LEITE J P, et al. Phase transformations evaluation on a UNS S31803 duplex stainless steel based on nondestructive testing[J]. Materials Science & Engineering A, 2009, 516(1/2):126-130.
[12] 占连扬,刘柯,杨友杰,等. 球墨铸铁QT400-18的石墨球化率对超声声速的影响[J]. 无损检测, 2017, 39(11):36-38. [13] 时靖,刘柯,邬冠华,等. 锻造参数对TC4锻件的组织和超声声速的影响[J]. 无损检测, 2017, 39(10):24-27. [14] DU Hualong, LONSDALE C, OLIVER J, et al. Evaluation of railroad wheel steel with lamellar duplex microstructures using diffuse ultrasonic backscatter[J]. Journal of Nondestructive Evaluation, 2013, 32(4):331-340.
[15] TITTMANN B R, ABDEL-GAWAD M, FERTIG K. Ultrasonic characterization of microstructure in powder metal alloy[J]. Journal of the Acoustical Society of America, 1984, 76(2):119-133.
[16] YANG L, LI J, LOBKIS O I, et al. Ultrasonic propagation and scattering in duplex microstructures with application to titanium alloys[J]. Journal of Nondestructive Evaluation, 2012, 31(3):270-283.
[17] 宋永锋, 李雄兵, 吴海平,等. In718晶粒尺寸对超声背散射信号的影响及其无损评价方法[J]. 金属学报, 2016, 52(3):378-384. [18] CAI Yeqing, SUN Jinzhong, LIU Chengjie, et al. Relationship between dislocation density in P91 steel and its nonlinear ultrasonic parameter[J]. Journal of Iron and Steel Research(International), 2015, 22(11):51-57.
计量
- 文章访问数: 7
- HTML全文浏览量: 0
- PDF下载量: 3
下载:
