Role of tempering cooling rate on impact toughness of 2CrMoV weld metal
Role of tempering cooling rate on impact toughness of 2CrMoV weld metal
复制标题
回火冷却速率对2CrMoV焊缝金属冲击韧性的影响
DOI:
10.1557/jmr.2020.59
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发表时间:
2020-03
影响因子:
2.7
通讯作者:
Lu Fenggui
中科院分区:
文献类型:
--
作者:
Fang Tao;Liu Xia;Shao Chendong;Cui Haichao;Lu Fenggui
Tempering cooling rate plays a significant role in the impact toughness of 2CrMoV weld metal. Three different tempering cooling rate experiments were carried out; it is found that the impact toughness of weld metal improved from 44.61 to 117.49 J as the cooling rate increased from 5 to 40 °C/h. Microstructure characterization revealed that the large blocky M–A constituents and cluster precipitation were considered to act as stress concentration sources and cleavage fracture initiators at a cooling rate of 5 °C/h. Under the cooling rate of 20 °C/h, the decrease of blocky M–A constituents as well as homogeneous distribution of precipitation induced the transition from cleavage to interfacial decohesion. The chance of crack propagation in intragranular ferrite matrix was increased, which needed to absorb more energy and improve impact toughness. When the tempering cooling rate reached at 40 °C/h, the cracks mainly propagated in the ferrite matrix; meanwhile, fine and homogeneous distribution of precipitation greatly inhibited crack propagation and led to higher impact toughness.
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影响因子:
2.7
作者:
Li Yifei;Cai Zhipeng;Li Kejian;Pan Jiluan;Liu Xia;Sun Lingen;Wang Peng
通讯作者:
Wang Peng
影响因子:
6.2
作者:
Liu Peng;F. Lu;Xia Liu;Hui-jun Ji;Yulai Gao
通讯作者:
Liu Peng;F. Lu;Xia Liu;Hui-jun Ji;Yulai Gao
影响因子:
2.7
作者:
Donghai Meng;F. Lu;H. Cui;Yuming Ding;Xinhua Tang;X. Huo
通讯作者:
Donghai Meng;F. Lu;H. Cui;Yuming Ding;Xinhua Tang;X. Huo
影响因子:
1.7
作者:
Tan Long;Zhang Linjie;Zhang Jianxun;Zhuang Dong
通讯作者:
Zhuang Dong
DOI:
10.1007/bf03350956
发表时间:
1991-01-01
期刊:
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
影响因子:
--
作者:
KIM, BC;LEE, S;LEE, DY
通讯作者:
LEE, DY