依靠随机涨落，形成贫碳区，贝氏体铁素体在贫碳的奥氏体中形核。
Carbon-poor area forms by way of random fluctuation and carbon atom diffusion. Bainitic ferrites nucleate in carbon-poor austenite.
粒状贝氏体及粒状组织中的M-A岛不是该钢焊接热影响区过热区脆化的原因。
The M-A units in granular bainite and granular structure are not the cause of embrittlement.
试验钢由针状铁素体和少量块状铁素体组成，焊缝为典型的针状铁素体组织，焊接热影响区粗晶区以粒状贝氏体为主。
The toughness of weld metal is the highest while the coarse grained region in the HAZ is the lowest because of welding thermal cycle and formation of brittle microstructure.
结果表明：在不同的焊接热循环条件下，焊接粗晶区组织主要是板条贝氏体和粒状贝氏体。
The result show that the microstructure formed after thermal cycle was mainly lath bainite and granular bainite in CGHAZ .
依靠随机涨落，形成贫碳区，贝氏体铁素体在贫碳的奥氏体中形核。
Carbon-poor area forms by means of random fluctuation and carbon atom diffusion. Bainitic ferrites nucleate in carbon-poor austenite.
贝氏体转变在孕育期内，通过涨落必然形成贫碳区和富碳区；
The bainite transformation during the incubative period was inevitable to form carbon leant zones and carbon enriched zones through the fluctuation.
贝氏体转变区的右侧端部封口等。
Additionally, the transformation zone of bainite is sealed up at the right side.
认为，中温区的贝氏体相变带有珠光体分解和马氏体相变的双重特征，具有过渡性。上贝氏体转变与珠光体分解有着本质上的区别，但又有密切的联系；
The results show that bainite phase transformation in the middle temperature area is transitive, and it has double character of the pearlite decomposition and the martensite transformation.
认为，中温区的贝氏体相变带有珠光体分解和马氏体相变的双重特征，具有过渡性。上贝氏体转变与珠光体分解有着本质上的区别，但又有密切的联系；
The results show that bainite phase transformation in the middle temperature area is transitive, and it has double character of the pearlite decomposition and the martensite transformation.
应用推荐