Xudong ZHANG
,
Wuzhu CHEN
,
Gang BAO
,
Lin ZHAO
材料科学技术（英文）
This paper describes a way to improve the weld quality through suppressing the porosity formation and restraining the growth of columnar grains by using a weaving beam in laser welding. The experimental results show that the N2 porosity of beam-weaving laser welding low carbon steel can be remarkabl...
关键词:
Welding
,
null
,
null
,
null
Chuansong WU
,
Jinqiang GAO
材料科学技术（英文）
Achieving an effective utilization and exploitation of TIG welding arcs require a thorough understanding of the plasma properties and its physical processes. Through simultaneous solutions of the set of conservation equations for mass, momentum, energy and current, a mathematical model has been deve...
关键词:
Welding
,
null
,
null
,
null
Yajiang LI
,
Bing ZHOU
,
Tao FENG
,
Jiangwei REN
材料科学技术（英文）
Microstructure performance in the welding zone of T91 heat-resistant steel under the condition of TIG welding was researched by means of metallography, X-ray diffraction and scanning electron microscope (SEM).Experimental results indicated that microstructure of T91 weld metal was austenite + a litt...
关键词:
T91 heat-resistant steel
,
null
,
null
王国庆
,
李曙光
,
吴会强
宇航材料工艺
doi:10.3969/j.issn.1007-2330.2014.Z1.001
大型结构件制造技术是发展重型运载火箭的关键技术之一,直径8～9m级重型运载火箭大型贮箱将带来成型、焊接装配等工艺和装备方面新的制造技术挑战.吸取以往人类历史上研制经验教训,有助于权衡大型结构件制造实现和制造经济性.需开展先进制造技术升级,加强大型轻质化结构制造技术和装备技术基础,适应发展要求.
关键词:
重型运载
,
大型结构制造
,
铝合金
,
成型
,
焊接
