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二问答1 第4题(见1997年第7期第47页)图2所示组织,能否由观察判断组成物形成的先后顺序?为什么?这时,能否根据组成物的分布确定各组成物是什么相或组织?2 图5为T10钢770℃淬油的一种组织.试分析其组成物有几种,各个组成物的形态及分布.3 试分析60钢完全退火后有哪几种组成物?各组成物形态、分布如何?并根据各组成物的形态及分布画出其组织示图.4 如果奥氏体冷却转变为马氏体及屈氏体.这两种组成物的形态及分布如何?设马氏体为针状,试画出此组织的示意图.(分别画出马氏体量很多及很少这两种情况的图像).5 9CrSi钢完全奥氏体化后淬火,如果所得组织为马氏体、屈氏体及上贝氏体.这三种组成物的形态分布如何?并画出组织示意图.
QUESTION ANSWER 4 (See No. 7, 1997, p. 47) Can the tissue shown in Figure 2 be observed by observing the order in which the compositions are formed? Why? At this point, can the composition be determined on the basis of the distribution of the compounds Figure 5 is a T70 steel 770 ℃ quenching a tissue test analysis of its composition, the shape and distribution of each composition .3 test analysis of 60 steel after the complete annealing which few The composition of the composition, the composition of the morphology and distribution? And according to the composition of the morphology and distribution draw its organization diagram .4 If the austenite cooling is transformed into martensite and troostite. The two composition Shape and distribution of how to set the martensitic needle-like, try to draw a schematic diagram of this organization (respectively, a lot of martensite volume and very little picture of the two cases) .5 9CrSi steel fully austenitic Quenching, if the resulting microstructure is martensite, troostite and upper bainite What are the morphological distribution of these three compositions?