Invited & keynote
  1. "Deformation Behavior of alpha/beta Bicrytals with Widmanstatten Orientation", Seoul National University, Seoul, Korea, Jan. 15 (1985)

  2. "Research and Development of Titanium Alloys", Research Institute of Industrial Science and Technology, Pohang, Korea, Jun. 28 (1991)

  3. "Mechanical Metallurgy of Steels", Pohang Iron and Steel Company, Wolpo, Korea, Oct. 10 (1991)

  4. "Powder Metallurgy of TiAl Intermetallic Compounds", Poongsan Research Institute, Ankang, Korea, April 27 (1993)

  5. "Application of Acoustic Emission Technology in Materials Science and Engineering", POSTECH, Pohang, Korea, June 2 (1993)

  6. Chong Soo Lee, Ji Sik Kim and Young Won Chang:, "Superplastic Deformation Behavior of Ti-Fe-Ni-Al Alloys", Harold Margolin Symposium, 123rd TMS Annual Meeting, San Francisco, U.S.A. Feb. 27- Mar. 2 (1994)

  7. "Quantitative Measurements of Fatigue Crack Closure", Symposium for Ultrasonic Techniques and Materials Strength, Pusan, Korea, Sep. 9-10 (1994)

  8. Chong Soo Lee and Ki An Lee:"Effects of Microstructure and Plate Orientation on the AE Behavior of Al-Li 8090 Alloy", The 2nd Pacific Rim Int’l Conf. On Adv. Mat. & Proc.(PRICM 2), Kyongju, Korea, June 18-22 (1995)

  9. "Material Characterization by use of Acoustic Emission technology", Acoustic Emission Workshop, Seoul, Korea, July. 5 (1995)

  10. Chong Soo Lee, Ji Sik Kim, Nack Joon Kim and Young Won Chang: "Application of SPF/DB Technology to the Aircraft Parts", Symposium for the Advanced Materials, Chinju, Korea, Dec. 1 (1995)

  11. Chong Soo Lee and Young Won Chang: "Near Net Shape Making via Superplastic Forming Technology", LG Metals Company, Yongin, Korea, Dec. 28 (1995)

  12. "Mechanical Properties of MIM Parts", 1st Japan-Korea Workshop on Powder Injection Molding, Cheju, Korea, May. 12-14 (1996)

  13. "Microstructural Influence on the Fracture and Fatigue Properties of Steels", Qualitech Symposium (POSCO), Pohang, Korea, May 29 (1996)

  14. "Life Estimation of Aircraft Structural Parts", 1st Symp. on the Aircraft Materials and Technology, Chinju, Korea, Sep. 16 (1996)

  15. Chong Soo Lee and Joo Hoon Lee: "A Study on the Microstructural Evolution during the Superplastic Bulge Forming of Ti-6Al-4V Alloy", International Symposium on Thermomechanical Processing & Metallurgy of Titanium Alloys, Wollongong, Australia, July 7-11 (1997)

  16. Chong Soo Lee and Ki An Lee: "Microstructural Influence on the Acoustic Emission Behavior of Al-Li 8090 Alloy", Symp. on the Development of Aerospace Technology, Seoul, Korea, Oct. 15 (1997)

  17. J.S. Kim, Y.W. Chang and C.S. Lee: "Mechanical and Microstructural Analysis on the Superplastic deformation Behavior of Ti-6Al-4V Alloy", Fourth Asia-Pacific Symposium on Advances in Engineering Plasiticity and Its Applications, Seoul, Korea, June 21-25 (1998)

  18. J.S. Kim, J.H. Kim, Y.T. Lee, C.G. Park and C.S. Lee: "Microstructural Analysis on the Superplastic Deformation Characteristics of Ti-6Al-4V Alloy", Xian International Titanium Conference, Xian, China, Sep. 15-18 (1998)

  19. "Mechanical and Microstructural Analysis on the Superplastic Deformation Characteristics of Ti-6Al-4V Alloy", 3rd Symposium on Aerospace Parts and Materials, Changwon, Korea, Oct. 8, (1998)

  20. T.S.Yoon, Y.W.Chang and C.S.Lee: "Effect of Particle Shapes and Porosity on the Mechanical Properties of PIMed STS316L", The Second Japan-Korea Workshop on Powder Injection Molding, 1819, Kumamoto, Japan, Nov. (1998)

  21. “Superplastic Deformation Behavior of Aerospace Ti Alloys”, Geongsang National University, Chinju, Korea, Sep. 22, (2000)

  22. “Superplastic Bulge Forming Ti-6Al-4V Alloy Considering Microstructural Evolution” Symposium on Precision Forming Technology of Materials, Chinju, Korea, Nov. 17 (2000)

  23. “Microstructural Influence on the Fatigue Properties of Steels”, Annual Symposium on Wire, POSCO, Pohang, Korea, Dec. 12 (2001)

  24. “Microstructure and Mechanical Properties of Ti-Alloys”, Inha University, Incheon, Korea, June 28 (2002)

  25. “A Microstructural Model for the Prediction of High Cycle Fatigue Life Based on the Small Crack Theory”, Northeastern Univ. Shenyang, China, Oct. 11, (2002)

  26. “A Microstructural Model for the Prediction of High Cycle Fatigue Life Based on the Small Crack Theory”, US-Korea Workshop, Maui, USA, Jan. 22, (2003)

  27. “High Temperature Deformation Behavior of Ti-6Al-4V alloy with Widmanstaten Microstructure” THERMEC '2003, Madrid, Spain, July 7-11, (2003)

  28. “Quantitative Analysis on the High Temperature Deformation Behavior of Ti-6Al-4V alloy”
    Annual Meeting of Korean Institute of Metals and Materials, Gongju, Oct 23, (2003)

  29. “Intelligent Forging of Ti-6Al-4V alloy considering microstructural evolution”, 2004 Korea-Japan Ti Symposium, Jeonju, March 5, (2004)

  30. “Quantitative Analysis of High Temperature Deformation Mechanisms of Ti-6Al-4V alloy
    with transformed microstructure” 2nd Korea-US workshop on Advances in Structural Materials, Jeju, May 10-12, (2004)

  31. “The Role of a/b Interface on the Mechanical Properties of Ti Alloys”, The 4th Grain Boundary Engineering Workshop, Inha University, Incheon, Oct. 29 (2004)

  32. “Load Relaxation Behavior of Ultra-fine Grained Ti-6Al-4V Alloy”, The 5th Pacific Rim Int’l Conf. on Adv. Mat. & Processing (PRICM 5), Beijing, China, Nov. 2-5 (2004)

  33. "High Temperature Deformation Behavior of AZ31 Mg Alloy", Marche Polytechnic University, Ancona, Italy, April 1 (2005)

  34. “Introduction of Ti Alloys and Its Application”, Taewoong Co. Busan, Korea, April 16 (2005)

  35. “Delayed Fracture Resistance of High Strength Cold-head Quality Steels”, the 20th Symposium on Steel Technology, Pohang, Korea, Apr. 20 (2005)

  36. “Intelligent Forging Technology of Ti alloys”, Korea University, Seoul, Korea, May 17 (2005)

  37. “Prediction of microstructure evolution during hot- forging of AZ31 Mg alloy”, 1st Asian Symposium on Magnesium Alloys, Jeju city, Korea, Oct. 12 (2005)

  38. “High Temperature Forming of Ti-6Al-4V Alloy Considering Microstructure Evolution”, Xi’an International Ti Conference, Xi’an, China, Oct. 16-19 (2005)?Keynote Lecture

  39. “Prediction of microstructure evolution during hot forging of AZ31 Mg alloy”, Busan National University, Busan, Korea, Nov. 17 (2005)

  40. “Intelligent Forging Technology of Ti-6Al-4V alloy” Dong-A University, Busan, Korea, Nov. 25 (2005)

  41. “High Temperature Deformation Behavior of Beta-Gamma TiAl Alloys”, THERMEC ¢2006, Vancouver, Canada, July 4-8, (2006)

  42. “High-temperature deformation behavior of ELI Ti-6Al-4V alloy with martensite microstructure” (invited), ICSAM-2006 (The 9th International Conference on Superplasticity in Advanced Materials), Chengdu, China, June 23-26 (2006)

  43. “Low-Temperature Superplasticity of Ultra-Fine Grain Ti-6Al-4V Alloy”, The 5th Grain Boundary Energy workshop Inha University, Incheon, Korea, Mar. 24 (2006)

  44. “Fatigue Properties and Life Evaluation Methods of Heat Treated Parts”, The 31st Symposium on Steel Technology, Pohang, Korea, Jul. 12 (2006)

  45. “Ti alloys as Biomaterials”, Gyungbuk National University, Daegu, Korea, Nov. 9 (2006)

  46. “High-temperature deformation behavior of ELI Ti-6Al-4V alloy with martensite microstructure” (invited), Marche Polytechnic University, Ancona, Italy, April 24 (2007)

  47. “고강도 스프링강의 피로특성 향상” 포스코-대원강업 초청강연, 포항, Korea, July 4 (2007).

  48. “Ti-6Al-4V합금의 고온 성형성 향상 기술” (invited), 2007 타이타늄 기술교류회, 한국기계연구원, Changwon, Korea, July 27 (2007).

  49. “무결함 제품 생산을 위한 지능형 단조 기술” 금요일의 과학터치, 서울역, 서울, Korea, Aug. 3 (2007).

  50. “Superplastic Deformation Behavior of Ti-6Al-4V Alloy with Martensite Microstructure” (invited), RIST Ti Workshop, Research Institute of Industrial Science and Technology, Pohang, Korea, Aug. 24 (2007).

  51. “High Strain Rate Superplasticity Utilizing Dyanmic Globularization of Ti-6Al-4V Alloy” (invited),? Austria-Korea Workshop in Light Alloys, ICC, Jeju, Korea, Nov. 5 (2007).

  52. “Microstructural mechanisms during dynamic globularization of Ti-6Al-4V alloy” 2007 Asian Forum on Light Metals & Exhibition, Kaohsiung, Tiwan, Dec. 3-5

  53. “미세조직 변화를 고려한 지능형 단조 기술” 제3회 지식카페, 대구기계부품연구원, 대구, Korea, Dec. 20 (2007).

  54. “Modeling of Ti-6Al-4V alloy by computational Intelligence techniques”, NCAMDT-2008 (National Conference on Advanced Materials, Devices and Technologies), S. V. University, Tirupati, India, 20-22 February 2008.

  55. "Influence of Deformation Modes on the High Temperatrue Workability of Rolled AZ31 Mg Alloy, Recent Development in the processing and Applications of Structural metals and Alloys, Como, Italy, June 22-25 (2008)

  56. “Influence of Initial Texture on the Twin Formation and Plastic Deformation of Mg-3Al-1Zn Alloy”, The 9th International Conference on Technology of Plasticity (ICTP 2008) pp. 145-150, Gyeongju, Korea, Sep. 2-7 (2008)

  57. “Hydrogen delayed fracture resistance of high strength steels”, Corrosion Cluster Workshop on Atmospheric Corrosion in Asian Area, NIMS, Tsukuba, Japan, November 28, (2008)

  58. “Manufacturing Technology of a Large-Scale Titanium Seamless Ring Using Ring Rolling Process”, 2008 Asian Forum on Light Metals, p. 33, Jeju, Korea, Nov. 4-7 (2008)

  59. “철강의 미세조직 변화에 따른 피로거동”, 포스코 초청세미나, Pohang, Korea, Feb. 2 (2009)

  60. “심화기술단기강좌”, 고려대학교 임계성능구현구조소재기술 단기강좌, Seoul, Korea, Feb. 4(2009)

  61. “고강도 철강재료의 수소취성 파괴 연구”, 포스코 특수강, Changwon, Korea, Feb. 23 (2009)

  62. “Optimised hot forming process of α/β Ti alloy considering microstructural evolution” 대한금속재료학회 춘계학술대회 포스코 학술상 수상 기념 초청강연, Changwon, Korea, April. 24(2009)

  63. “Dynamic globularization behavior and bio-mechanical compatibility of Ti-13Nb-13Zr alloy”, Nano/Amorphous Materials and Interface Science Symposium, Miyagi-Zao, Japan, August.7-8 (2009)

  64. "Hydrogen delayed fracture properties of high strength steels”, GIFT seminar, Pohang, Korea, Oct. 15 (2009)

  65. "Effect of Twinning-detwinning ?Characteristics on the Low Cycle Fatigue Behavior of Rolled AZ31 Magnesium Alloy", The 3rd Asian Symposium on Magnesium Alloys ? 2009, Shenyang, China, Sep. 21-23 (2009)

  66. "Hydrogen delayed fracture properties of High Mn TWIP steels”, Korea-Germany workshop on high Mn steel, Pohang, Korea, Nov. 3-5 (2009)

  67. "Severe-Plastic Deformation and Superplasticity of Two-Phase Titanium Alloys: 139th TMS Annual ??????? Meeting and Exhibition, Seattle, U.S.A. Feb. 14 ? 18 (2010)

  68. “Role of ε-martensite on the Hydrogen Delayed Fracture of High Mn Steels”, Ultra high performance steels for eco-friendly automotive application, Pohang, Korea, July.6 (2010)

  69. “Role of ε-martensite on the Hydrogen Degradation Behavior of High Mn Steels”, PRICM-7, Cairns, Australia, Aug. 5 (2010)

  70. “초고강도 냉간 압조용 선재의 수소지연파괴 거동에 대한 연구”, 제61회 철강기술심포지움, KINTEX, Goyang, Korea, Sept. 30 (2010)
  71. “철강의 미세조직에 따른 피로거동”. POSCO, Pohang Korea, Dec.13 (2010)

  72. "철강재료 강도학", 동국제강, Pohang, Korea, Mar.31, Sep. 22 (2011)

  73. "Effect of Aluminium Composition on Hydrogen Delayed Fracture of TWIP Steels" 1st International workshop on High Manganese Steels (HMnS 2011), Seoul, Korea, May 15-18 (2011)

  74. "Dynamic and Static Globularization Behavior of Two-Phase Ti-Alloys", THERMEC 2011, Quebec Canada, Aug. 1 (2011)

  75. "고강도강 선재의 수소취선 현상 및 저항성 향상방안" POSCO Family Conference, POSTECH, Pohang, Korea, Aug. 24 (2011)

  76. "고강도강의 수소취선 현상 및 저항성 향상방안", 표준과학연구원, 대전, Sep. 29 (2011)

  77. "Models for Microstructure Evolution during TMP of Alpha/Beta Titanium Alloys", MS&T' 11, Columbus, OH, USA, Oct. 16-20 (2011)

  78. Powder Processing, Consolidation and Metallurgy of Titanium, Brisbane, Australia, Dec 5-8 (2011)

  79. "Potential of UFG materials as high performance penetrator materials", TMS Spring Meeting, Orlando, USA (2012)

  80. "Effect of Microstructural parameters on hydrogen embrittlement of twinning-induced plasticity steels", Asia Steel International Conference, Beijing, China (2012)

  81. Lee Semiatin and Chong Soo Lee: “Material-Behavior Models for the Thermomechanical Processing of Aerospace Alloys” (Keynote), PRICM-8, Waikoloa, Hawaii, August 4-9, 2013

  82. Chong Soo Lee, Taekyung Lee, Jae Hyung Kim, Chan Hee Park: “Fabrication of Ultrafine-Grained Ti-6Al-4V Bulk Sheet/Rod for Related Industries and Their Mechanical Characteristics” (Invited), PRICM-8, Waikoloa, Hawaii, August 4-9, 2013

  83. Sun Mi KIM, Kwang Tae KIM, JiSoo KIM Yoon-UkHeo and Chong Soo Lee: “Effect of Alloy Addition on the Corrosion Resistance and Mechanical Properties of 27Cr-7Ni Hyper Duplex Stainless Steels”(Keynote), IUMRS International Conference on advanced Materials (IUMRS-ICAM), Sep. 22-28, 2013

  84. Taekyung Leeand Chong Soo Lee: “Multi-Pass Caliber-Rolling Process to FabricateUltrafine-Grained Bulk Ti Alloy with Superior Mechanical/Biocompatible Performances” (Keynote), THERMEC 2013, Las Vegas, USA, Dec. 2-6, 2013