Nghiên cứu này nghiên cứu về số lượng tia X tối đa và nửa chiều rộng của tia X dòng nhiễu xạ của thép không gỉ austenitic kết cấu. Hướng độc lập thử nghiệm ứng suất gần như đồng ý với giá trị lý thuyết, được xác định từ các mô hình Voigt, Reuss và Kroner. Các kết quả của việc kiểm tra tải cho hai mẫu thép không gỉ austenitic SUS316L vuông góc cho thấy rằng độ rộng và cường độ tối đa của đường nhiễu xạ theo hướng cán tương ứng đạt mức thấp nhất. và các giá trị cao nhất xung quanh hướng độc lập với ứng suất. | TAÏP CHÍ PHAÙT TRIEÅN KH&CN, TAÄP 15, SOÁ K2- 2012 STUDY ON HALF-WIDTH AND MAXIMUM X-RAY INTENSITY OF DIFFRACTION LINE OF COLD-ROLLED AUSTENITIC STAINLESS STEEL AS A FUNCTION OF ARIMUTH ANGLE ψ Le Chi Cuong University of Technical Education Ho Chi Minh City (Received April 11th, 2011, Accepted September 21st, 2012) ABSTRACT: This research studies on the maximum x-ray counts and half-width of the x-ray diffraction line of textured austenitic stainless steel. The experimental stress-independent direction almost agrees with the theoretical value, determined from the Voigt, Reuss and Kroner models. The result of loading test for two perpendicular SUS316L austenitic stainless steel specimens shows that the broadness and maximum intensity of diffraction line in the rolling direction respectively get the lowest and highest values around the stress-independent direction. In the traverse direction, the broadness and maximum intensity of diffraction line vary slightly as in the case of the isotropic materials. Key words: X-ray Diffraction; Residual Stress; Textured Material; Stress Constant, Half-width. On the other hand, Vietnam is in process 1. INTRODUCTION The broadness of an x-ray diffraction line, of investing a nuclear power plant and stainless represented by the half-width (the width at half steel is a common material used. This research of maximum x-ray counts), is an important will investigate the change of half-width and parameter that characterizes the material the maximum x-ray counts with ψ angles for properties, such as fatigue level, alloying level, cold-rolled austenitic stainless steel SUS316L, plastic dislocation which is used for many components such as density, etc. For the isotropic materials, the reactor shroud [1]. The theoretical value of half-width is constant for all the ψ angles minimum of half-width is also computed and because the mechanical characteristics are compared to the experimental result. equal for all .
