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andyany 發(fā)表于 2015-4-15 13:09 ![]()
/ s# B0 m# [- x: |# R我的理解是,固溶說的是高溫保持,,退火強(qiáng)調(diào)的變溫速度,。& t! h4 a/ J7 r
你這一段是你的觀點嗎?還是來自手冊或標(biāo)準(zhǔn),?
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固溶是有退火效果的,,爐子里出來的鋼絲組織均勻,韌性好而強(qiáng)度低,,體現(xiàn)出來就是軟且延伸性好,。我一直認(rèn)為所謂固溶還是退火,都是針對材料組織來討論的,,高溫保持或者冷卻速率等,,只是一種達(dá)到目的的工藝。0 v, S0 w. a, U1 ?% G
我的觀點,,來自該篇論文THE HEAT TREAT DOCTOR: Stainless Steels Part Two: Heat
0 J& \3 F. o' E* j6 \5 hTreatment Techniques5 Z0 T6 \" S' k4 A: L
這篇文章的參照如下:# {0 B, F/ p2 t4 f. _
References:4 H7 D: F8 Z) K) }% P
1. Stainless Steel Handbook, Allegheny Ludlum Steel Corporation; b5 E* @2 j3 Q
2. The A-Z of Materials, www.azom.com.( ?3 T( G: n5 M, P1 P
3. ASM Handbook, Vol. 4: Heat Treating, ASM International, 1991.4 v4 r* M+ {" m0 t4 L1 b
4. Chandler, Harry editor, Heat Treater’s Guide, 2nd Edition, ASM International, 1995.. H* V0 p3 V g/ [$ h
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以下是論文中對于退火的具體闡述部分,。
1 T- w" P2 r" k9 y. a2 VAnnealing
- y7 }! c0 w4 p" S! S: K9 l# [% FA number of different annealing methods (full, isothermal, subcritical) are commonly
( y/ ?2 T/ N* P/ b5 Fused for stainless steel. Austenitic stainless steels cannot be hardened by heat
% R; ^: z M% P. h1 atreatment, but they do harden by cold working. Annealing not only allows
' I+ v# U5 W; A8 G" S% [recrystallization of the work hardened grains but also places chromium carbides' }0 H( [, `7 b- Y7 O
(precipitated at grain boundaries) back into solution. Annealing can also be used for' n. t2 U' y- Y
homogenization of castings or welds, and to relieve stresses from cold working.
; @1 \1 i' F6 e4 {, @Annealing temperatures usually are above 1900°F (1040°C), although some stainless
/ h, V6 \7 M' M psteel types may be annealed at closely controlled temperatures as low as 1850°F
" u# X' w- h5 l: j" m(1010°C) when fine grain size is desired. Time at temperature is often kept short to
/ |$ H0 P8 b+ L" j8 D6 Hminimize surface oxidation and to control grain growth, which may lead to a surface+ p7 i) j$ N* b. E; W( {2 v$ B
phenomenon called "orange peel." |
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