SUPERPLASTIC WELDING OF STEELS 40Cr-CrWMn

Acta Metall Sin

1993, Vol. 29

Issue (10): 92-96 DOI:

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SUPERPLASTIC WELDING OF STEELS 40Cr-CrWMn

WEN Jiuba;XI Jukui Luoyang Institute of Technology

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WEN Jiuba;XI Jukui Luoyang Institute of Technology. SUPERPLASTIC WELDING OF STEELS 40Cr-CrWMn. Acta Metall Sin, 1993, 29(10): 92-96.

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Abstract Superplastic welding of steels 40Cr-CrWMn, with prior surface treatment oforganic solution protecting coating after thermo-mechanical treating, may be performed inair in a furance under conditions: temperature ranged 750--780℃, strain rate 2×10~(-4) s~(-1),pressure 50--90 MPa, and time 3--5 min. The welds seem to have similar strength to the basesteel 40Cr. The microstructure of welds was analyzed under SEM and TEM. Themicromechanism for superplastic welding of steels was suggested as the disappearance of orig-inal bond interfaces caused by atomic diffusion and grain sliding during superplasticdeformation.

Key words: steel 40Cr steel CrWMn superplastic welding

Received: 18 October 1993

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1993/V29/I10/92

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[1]	QIAN Gui'an HONG Youshi. EFFECTS OF ENVIRONMENTAL MEDIA ON HIGH CYCLE AND VERY-HIGH-CYCLE FATIGUE BEHAVIORS OF STRUCTURAL STEEL 40Cr[J]. 金属学报, 2009, 45(11): 1356-1363.
[2]	YA NG Yunlin; LI Zhi; LI Yan(LuoYang institute of TechnoLogy); Luoyang 471039)(Manuscript received 1994-08-31; in revised form 1995-03-31). FRACTURE ANALYSIS OF JOINT AFTER CONSTANT TEMPERATURE SUPERPLASTIC WELDING[J]. 金属学报, 1995, 31(20): 384-38.
[3]	ZHANG Xiyan;KANG Mokuang;CHEN Daming;Xiaolei(Northwestern Polytechnical University;Xi'an)(Manuscript received 30 June;1993;in revised form 6 September;1993). INTERFACE LEDGE AND RETAINED AUSTENITE FAULTS OF LOWER BAINITE IN SILICON CONTAINING STEELS[J]. 金属学报, 1994, 30(3): 109-111.
[4]	LI Yanxiang;WEN Jiuba;HUANG Jinfiang;ZHU Yaomin(Luoyang Instituteof Technology). SUPERPLASTIC WELDING OF FLAME SPRAYED NiFeCrBSi ALLOY COATING ON CrWMn STEEL[J]. 金属学报, 1994, 30(15): 136-139.
[5]	LIU Xiaokun;WANG Jianjun;LU Minxu;JIN Shi;FU Xiangjiong Xi'an Petroleum Institute Northwestern Polytechnical University; Xi'an. CORROSION FATIGUE CRACK PROPAGATION OF MARTENSITIC AND BAINITIC GC-4 ULTRA-HIGH STRENGTH STEEL[J]. 金属学报, 1993, 29(12): 27-33.

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