利用小冲杆(SP)对辐照前后压力容器钢(A508-3钢)在-150-20℃的温度范围内进行了力学性能测试, 拟合出拉伸和冲击的SP数据标准化经验公式, 并对SP测试后的断口进行了SEM分析. 研究结果表明, SP测试获得的断裂能可较好地表征材料韧--脆转变特性; SP测试与标准冲击测试获得的辐照前后韧--脆转变温度(DBTT)变化趋势一致, SP测试获得的拉伸性能呈明显的硬化和脆化趋势, 能够较好地表征A508-3钢的辐照硬化和脆化.
The small punch (SP) test on mechanical properties of the reactor pressure vessel (RPV) steel (A508-3) before and after irradiation was performed at -150 to 20℃, and then the relation between the tested results and standard test results was analyzed based on the empirical method. SEM analysis on the fractograph was carried out to study the mechanism of fracture under different temperatures. The impact property extracted from SP test on the irradiated specimen was compared with the standard impact test data, the result shows that the SP tested fracture energy can be a good value to character the irradiation hardening and embrittlement of the RPV steel. The tensile values which extracted from the SP test show the irradiation embrittlement effect as well.
[1] Mnahan M P, Argon A S, Harling O K. J Nucl Mater, 1981; 103-104: 1545
[2] Huang F H, Hamilton M L, Wire G L. J Nucl Technol, 1982; 57: 234
[3] Manahan M P. J Nucl Technol, 1983; 63: 295
[4] Lucas G E, Sheckherd J W, Odette G R. J Nucl Mater, 1984; 122: 429
[5] Misawa T, Adachi T, Satto M, Hamaguchi Y. J Nucl Mater, 1987; 212: 202
[6] Kameda J, Mao X. J Mater Sci, 1992; 27: 983
[7] Foulds J R, Viswanathan R. J Eng Mater Technol, 1994; 116: 457
[8] Ha J S, Fleury E. Int J Press Vessel Pip, 1998; 75: 707
[9] Bulloch J H. Eng Fail Analy, 2004; 11: 635
[10] Jia X J, Dai Y. J Nucl Mater, 2003; 323: 360
[11] Han H, Wang Z W, Guang K S. Press Vessel Technol, 2004; 21(10): 14
(韩浩, 王志文, 关凯书. 压力容器, 2004; 21(10): 14)
[12] Hui H, Han H,Wang ZW, Li P N. Press Vessel Technol, 2009; 26(1): 1
(惠虎, 韩浩, 王志文, 李培宁. 压力容器, 2009; 26(1): 1)
[13] Wang Z X, Shi H J, Lu J, Shi P, Ma X F. J Nucl Eng Des, 2008; 238: 3186
[14] Ding K Q, Shou B N, Wu Y L. J Exp Mech, 2008; 23(6): 539
(丁克勤, 寿比南, 吴永礼. 实验力学, 2008; 23(6): 539)
[15] Finarelli D, Carsughi F, Jung P. J Nucl Mater, 2008; 337: 65
