问题 问答题

下图所示为A-B-C三元相图投影,三个组元在液态无限互溶,在固态有限溶解,固溶度随温度变化,e1P、e2p、e3p是液相的成分变化线,其他箭头表示固相成分变化,试回答:

1.合金1在常温下的组织组成物。

2.用数学表达式表示合金2在常温下相组成物的百分含量。

3.画出合金3从液相到室温的冷却曲线,写出各温度区间的反应式,并在三相反应中标明相成分变化趋势。

4.若α、β、γ均为同等作用的强化相,分析合金1、2、3在热处理中的强化效果大小。

答案

参考答案:

1.α初晶+(α+β)共晶

2.合金2在常温下相组成物为α、β、γ,设a02延长交b0c0于D点,b02延长交a0c0于E点,c02延长交a0b0于F点,则α%=2D/a0D%,β%=2E/b0E%,γ%=2F/c0F%(或其他表达式)。

3.合金3从液相到室温的冷却曲线(略);各温度区问的反应式为:L→γ,Le3→p→αa2→a+γc1→c,Lpa→βbc,γb→b0与γc→c0互析,α、β、γ同析。

4.合金1、2、3在热处理中的强化效果:2>3>1。

多项选择题

根据销售合同和已知资料指出一般原产地和保险单中错误的地方。
(1) 销售合同

SALES CONTRACT


Contract No.: NJTO90218
Date: FEB. 18, 2009
Signed at: Nanjing, China
The Seller: NANJING JINLING TEXTILE CO., LTD.

Address: UNIT A 18/F, JINLING TOWER, NO. 118JINLING ROAD, NANJING, CHINA
The Buyer: DEXICA SUPERMART S. A.Address: BOULEVARD PACHECO 44, B-1000 BRUSSELS, BELGIUM
This Sales Contract is made by and between the Sellers and the Buyers, whereby the sellers agree to sell and buyers agree to buy the under-mentioned goods according to the terms and conditionsstipulated below:

Commodity and specifications Quantity Unit Price Amount
GIRLS GARMENTS 10800PCS CIF BRUSSELSEURS. 00/PC EUR54000.00

10% more or less in quantity and amount are acceptable
Packing: IN CARTON

Shipping Mark: N/M
Time of Shipment: Within 30 days after receipt of L/C
From NINGBO PORT CHINA to BRUSSELS, BELGIUM
Transshipment and Partial Shipment: Allowed
Insurance: to be effected by the Seller for 110% of full invoice value covering all risks up to port of destination and war risks included with claim payable at destination.
Terms of Payment: By 100% Irrevocable Letter of Credit in favor of the Sellers to be available by sight draft to be opened and to reach China before APRIL 1,2009 and to remain valid for negotiationin China until the 21days after the foresaid Time of Shipment. IJC must mention this contractnumber L/C advised by BANK OF CHINA JIANGSU BRANCH. ALL banking Charges outside Chinaare for account of the Buyer.


The Seller



The Buyer
NANJING JINLING TEXTILE CO., LTD.

DEXICA SUPERMART S.A.


钟山
ALICE
(2)已知资料
装运信息:指定APL承运,装期2009.04.19;船名PRINCESS:航次V.018
装箱资料:合计108箱,装入1×20#集装箱。
商业发票号:NJTO90218-09,签发日期2009年4月10日。
信用证号:CMKK9180205
(3)一般原产地证


缮制错误的地方有:

单项选择题