翔梦随风 发表于 2011-5-5 17:13:59

谁能回答下面几个问题吗？（英文版）

1、Describe the following iron based alloys in terms of the range of compositions (particularly
carbon) and typical mechanical properties.
a. Plain carbon steel e. Gray cast iron
b. Low, medium and high carbon steel f. Stainless steels: ferritic, austenitic,
martensitic
c. Cast iron g. Hypo-eutectoid steel
d. White cast iron h. Hyper-eutectoid steel
2、Describe, in general terms, the composition, structure, mechanical properties and formation
of the following phases found in steels:
a. Ferrite d. Martensite
b. Pearlite e. Austenite
c. Cementite f. Graphite
3、Describe, in general terms, the following standard types of heat treatments in terms of the
processing, microstructure produced, and mechanical properties for steel:
a. Normalize e. Martemper
b. Temper f. Austemper
c. Quench g. Stress relieve
d. Austenitize h. Anneal
4、Why do alloys possessing high hardenability often have poor weldability (usually due to
weld cracking)?
5、What role does carbon play in the formation of martensite?Can pure iron be austenitized
then quenched to form martensite?
6、How does austenite grain size effect hardenability?
7、What is the A3 temperature and why is it different forthe different alloys being investigated?

翔梦随风 发表于 2011-5-5 17:15:09

期待高手出现哦

翔梦随风 发表于 2011-5-6 22:39:42

:)求高手:)

草原的风 发表于 2011-5-7 03:59:13

内容简单，回答的内容太多，成为作文了，没有那功夫。

今天快乐 发表于 2011-5-7 07:25:41

内容较简单，纯粹考验英语水平。

段凯耀 发表于 2011-5-8 09:16:48

呵呵，大二的学生表示都是刚学过的，推荐看一本书，英国皇家科学会的会员Cahn著的，《The Coming of materials science》，需要的话我可以给你电子版的。

motion_0576 发表于 2011-5-8 19:32:34

我想要一份《The Coming of materials science》，请发至：stz001@163.com谢谢。

fengdl119 发表于 2011-5-9 20:58:54

好像是课后练习或是考试题

cosmo4411110 发表于 2011-6-9 17:09:23

我想要一份《The Coming of materials science》，请发至：cosmo4411110@163.com谢谢

lwklwk 发表于 2011-6-10 18:36:04

谢谢 ，也给我一份吧lanweike1@126.com
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